On one normal night in New York city, 4 fully grown Mutant Turtles do their evening training with Master Splinter at their Sewer Den below New York. They've spent their 15 years with their sensei, Master Splinter and learning the arts of Ninjitsu. They've never reveal themselves to the outside world, due to their appearances. As it would lead them to trouble. But when all seems fair a pack of rubble eating tiny machines came into their Den and start chewing up the place. They battled these machines one by one with their Ninja skills. Unfortinately their den starts to collapse and they're'e now separated from their master. They contacted him by their own cell phones "Shell Cell" and they agree to meet up with him around the other side. But the way to the other side is blocked. So they'll have to go "top side" in other to get to the other side. And this will lead to battling one of New york's toughest gangs "The Purple Dragons".
The Turtles discover the source of the Mouser robots that trashed their old lair: Dr. Baxter Stockman a noted technological genius/inventor, who tries to pass off the Mousers as a means to eradicate the city's rat problem. Donatello gets one of the broken Mousers working and the Turtles chase it through the sewers. Meanwhile, Stockman's lab assistant April O'Neil uncovers a secret subterranean facility where hundreds of Mousers are being manufactured and stored - but to what end?
When April O'Neil wakes up in the Turtle's lair she has major trouble dealing with the reality of four giant talking Turtles and a Zen-master rat. She soon learns of the origin of the Teenage Mutant Ninja Turtles and they realize their common enemy is Baxter Stockman and his army of robotic Mousers.
Raphael is a little cooped up underground with only his brothers and Master Splinter. When Raphael almost clobbers Michelangelo in some brotherly sparring, it's apparent that Raphael needs to get out let off a little steam. But when he meets up with Casey Jones, a vigilante erring a little to the right of justice, Raphael must face the reality of his own hothead ways.
When a scientist accidentally unleashes a super-powered Nanotech monster with a childlike mind, it adopts a small-time thief as its father figure, and the mayhem begins! Their crime spree targets April's new antique shop, and the Turtles come to her rescue. But how do you stop something that rebuilds itself as fast as you bash it apart? It's a question the Turtles better answer fast, cause the Nano-matic slices, it dices, and it purees turtle soup in seconds!
The Turtles, investigating a strange blackout, discover the Foot Ninja stealing a Japanese ceremonial sword from the Museum. But this is no ordinary sword. And just what do the Foot intend to do with it?
After Casey Jones makes himself an unwanted guest in the Turtles' lair, Raphael takes him topside for a "breath of fresh air," where they encounter the Foot Tech Ninjas - enhanced soldiers able to turn themselves invisible. Raph is caught and interrogated, but Casey manages to slip away and warn the others. Raph escapes his captors but, unbeknownst to him, is tailed by a squad of cloaked Foot Tech Ninjas. Will Casey and the others get to Raph in time before he leads the Foot directly to the Turtles' lair?
On a nightly training run, the Turtles and Casey Jones break up a Purple Dragon robbery. One of the perps is Angel, a girl Casey knows from the neighborhood who's going through her initiation rites to become a Purple Dragon. Casey tries to stop Angel from going down the wrong path, but ends up getting captured by the Purple Dragons and offered up as the "prize" in the gang's fight club competitions. It's up to Angel to bring the Turtles in to help rescue Casey. The Turtles must battle it out against the biggest, meanest Dragons, including Hun, their man-mountain of a leader.
The boys have made friends with a group of homeless, and are worried when they start mysteriously disappearing into the night! Some Turtle-style detective work leads them to the Garbageman, an immense, smelly egomaniac, who is kidnapping the homeless for slave labor to build an empire on a foundation of garbage. Sounds like it's time for the Turtles to take out the trash!
Shredder attempts to convince Leonardo that the Foot are fighting the good fight and the turtles should stand with him. Leonardo is taken in and almost convinces the others until Splinter reveals what he knows of the Shredder. Leonardo realizes he's been fooled - it's never a good idea to fool a turtle at least not a Teenage Mutant Ninja one.
Our four turtles stand facing their most formidable foe to date - the Shredder. Battle weary, the turtles cannot stand against the Shredder and manage to slip away getting separated in the process. Can they survive apart? Can they get back together in time to save themselves and face the Shredder?
Believing the Turtles can accomplish so much more for the city, and inspired by iconic superhero Silver Sentry, Michelangelo decides to take a crack at being a superhero. But he soon discovers superhero-ism is not all it's cracked up to be. Worse still, he stumbles upon a mind-control experiment by Silver Sentry's arch nemesis Dr Malignus!
When Don's examination of some mysterious crystals attracts the attention of a subterranean monster, the Turtles underground exploration unearths a Foot Genetics Lab! A video record of strange experiments reveals more of Shredder's mysterious agenda, but when the mutants attack, the boys better watch out, or it's everybody out of the gene pool!
After discovering an abandoned underground Foot Genetics Lab, and being attacked by the once-human Quarry, the Turtles assist them in trying to repair a force field to protect them against the mindless beasts roaming the tunnels. But the force field needs a new crystal power source, and the only place to get one is by travelling deeper underground, to the seemingly haunted catacombs, where many have mysteriously vanished...
When the Turtles and their new allies start vanishing one by one, only Michelangelo is left. He finally finds the perpetrator in the underground city - it's sole survivor. Though his intentions appears noble at first, by restoring the creatures to their normal human selves, there is a catch...
With all the turtles living in April's apartment, things are getting a little crazy. Donatello meets up with Kirby, an artist renting April's basement apartment. Through the powers of a mysterious crystal tied to his pencil, Kirby is able to create anything he draws including his own world - a world that he and Donatello get sucked into where things get more and more curious.
On a training run Leo is ambushed by a major Foot attack force, including Foot Tech Ninjas, Hun, and a new threat: the Foot Elite! At their temporary home at April's apartment, Don, Raph and Mikey tire of wait for Leo to get back and decide to go look for him. But is it too late?
When the Foot Ninja attack April's apartment in force, the Turtles fight against overwhelming odds to get the wounded Leo to safety. The Shredder raises the stakes, trapping our heroes in the burning Antique Shop with no way out!
The Turtles, Splinter, Casey and April just barely manage to escape from the explosion that destroys the antique store. They hit the road and hide out at Casey's grandmother's old farmhouse, but Leonardo is badly wounded, drifting in an out of consciousness. As he attempts to recover, the Turtles and Splinter tell tales of Leonardo's early adventures, using the stories to help guide him back to the real world.
Still recuperating up at Casey's grandmother's farm, the turtles are feeling the sting of boredom. However, a scientist known as the "Monster Hunter" has come to the area searching for a legendary monster, rekindled by the sighting of a green monster lurking in the woods. So Casey, Mike and Don decide to have a little fun with the Monster Hunter. It all becomes a bit odd when the boys find some other large green creature besides themselves lurking about. Can they survive both monster and Monster Hunter?
With Leo fully recovered the goal is clear: to destroy the Shredder once and for all. With April providing remote computer assistance, the Turtles begin their assault on the Foot HQ skyscraper, fighting their way to the top floor by floor. They battle an army of Foot Ninja Guards and the deadly cloaking Foot Tech Ninja. But no one is quite prepared for what they encounter inside a Foot Genetics lab...
The Turtles and Splinter continue to fight their way up through the Foot Headquarters skyscraper to face the Shredder. But they now have to face off against some Shredder Clones, the Foot Tech Ninja and the powerful Foot Mystics! As if that wasn't bad enough, Baxter Stockman decides now is the time to make his move...
With Stockman showing up in the middle of the final battle, our heroes must temporarily join forces with the Shredder to defeat his exo-suit before he annihilates them all. With everything working against them, high atop the Shredder's skyscraper, can our turtles emerge victorious?! And what roll does the Sword of Tengu have to play?
With Splinter mysteriously vanished, the Turtles are feeling frustrated, not knowing where to start looking. Impatient with strategizing, Raph heads off on his own - and straight into trouble, of the mobster kind!
As the Turtles continue their search for Splinter, they turn their attention to the Guardians. The trail soon leads them to a building marked as "TCRI" - the same letters on the canister of ooze responsible for their mutation! Now with two reasons to infiltrate that building, the Turtles recruit both April and Casey to help get them inside.
The Turtles successfully infiltrate the mysterious TCRI building, and locate the unconscious Splinter inside a stasis tank. But they also discover that there's more to the technicians inside then meets the eye...
The Turtles are taken across space to the Planet D'Hoonnib - and right into the middle of a Police arrest! They befriend Professor Honeycutt, alias The Fugitoid, who is being pursued by the military forces of General Blanque. The General wants Honeycutt's teleportation device, perhaps the only way The Turtles will reach Earth again...
Still trapped on D'Hoonnib, the Turtles and The Fugitoid visit a seedy night club in an effort to find transportation off of the Planet. But General Blanque intercepts them, and, in the battle that follows, Fugitoid is captured by another party interested in the teleportation device...
Captured by the Triceratons, the Turtles are used to persuade the Fugitoid to work on his teleportation device. Trapped in a jail cell, the Turtles plot an escape plan. But will it work? And can they get to Fugitoid in time?
The Turtles are brought to the Tri-Sports Arena, where they have been selected to battle as Gladiators. For the Triceraton crowds, the only way to gain victory is by showing no mercy...
The Triceratons do battle with the General Blanque's forces and in the chaos, allow the Turtles to capture the Triceraton Prime Leader as their hostage. They prepare to return home using the Fugitoid's teleporter, but there's only one problem : he's never tested it
The Turtles arrive inside TCRI, and are reunited with Splinter. They also find themselves facing old ghosts as well as their origins are revealed to them at last...
The Turtles and Splinter use Virtual Reality technology to learn of the Utrom's presence and purpose on Earth, but an old enemy believed dead returns to make the journey VERY real...
The Turtles and Splinter escape the Utrom's virtual reality device, but now they must escape TCRI before it is destroyed. Buttheir only way out is hampered by one small obstacle: SHREDDER AND THE FOOT!
The Ultimate Ninja, a warrior from across the galaxies, has come to take the head of Shredder - only to find Leonardo has already done the deed. So now The Ultimate Ninja challenges Leonardo in a battle to the death...
The Turtles retreat to Casey Jone's Grandmother's farm house to reflect on their recent battles. But the figure of the Shredder still haunts their every memory. What is the Shredder's connection to the Turtles origins?
When Nano returns to take revenge on the Turtles, the four brothers must stop his rampage. But this is made more difficult when Nano springs his "Father" from prison...
The Turtles are about to discover that the Mutagen that transformed them, has had an effect on other creatures as well. They must now defend their territory from the rampage of the insidious alligator Leatherhead...
The Turtles return to the underground city but they find the city is now abandoned, it's crystal moon power source missing, and it's human population reduced to monsters. Can an unstable serum created by Donatello restore the humans to normal?
The collapse of Shredder's crime empire means the city is open for the most vicious gangs to seize control for themselves. New York is plunged into chaos and anarchy, and only the Turtles can maintain order..or can they?
The Turtles are caught in a power struggle for the city : The Foot, the Purple Dragons, and the Mob, all want a piece of the pie. Are the boys able to save the city from anarchy? And is it their problem in the first place?
With the Foot, the Purple Dragons, and the Mob becoming more than the Turtles can handle, the TMNT reluctantly call on the help of Shredder's old General: Karai.
Whilst testing out their new Shell Sub, the Turtles are forced to sink or swim when they discover their old enemy Garbageman is creating his own underwater city.
Casey Jones joins the sport of Super Slam Hockey. However it turns personal when a legendary 17th century Golden Puck is taken by crooks. Can the Turtles hold Casey in line long enough to find the Puck, or will the hardcore rules of Super Slam Hockey get to them first?
Shredder deploys an army of Foot Mechs and a Cyborg duplicate of Splinter against the Turtles.
Shredder's army of Foot Mechs confront the Turtles, but even if they defeat this army, can they stop Shredder? And how does a Triceraton warrior called Zog fit into it all?
The Turtles help April unlock the secrets of an ancient Puzzle cube left behind by her father. The puzzle's solution takes April and the Turtles on a journey of discovery..to another dimension filled with giant insects!
Michelangelo's quest to collect a rare comic take the TMNT and Casey Jones back to Northampton, Massachusetts. Here they uncover a plot by a madman to kidnap the members of a retired super-hero team called The Justice Force.
Every three years, Splinter leaves his students to go to parts unknown. Curious, the four Turtles decide to follow him this time. The pursuit of their master leads the Turtles into something they never expected, right into the middle of the "Big Brawl" : The Battle for the Nexus, a brutal tournament where fates will be decided...
The Turtles discover more about their master Splinter as the Battle Nexus tournament continues. They also have a run-in with a warrior who Splinter defeated in the tournament three years ago: Lord Draco.
The Battle Nexus tournament begins to take it's toll on the TMNT : Leonardo is poisoned, Splinter is framed, and Lord Draco moves closer to victory.
The Battle Nexus Tournament nears it's conclusion : Dontello finds himself fighting for his life with Usagi Yujumbo as Mikey is poised to become Battle Nexus Champion. Leonardo's condition worsens, and Splinter is still in prison. Worse still, Lord Draco now has control of the Daimyo Warstaff...
Thinking the Fugitoid is on Earth, The Triceratons, attempt to extract information on the scientist's location from humanity. The only problem is their mind-probe destroys the brain! How can the Turtles fight an entire invasion force?
The Turtles succeed in rescuing several humans from the Triceraton's grasp...only to lose one of their own whilst doing so. Now the heroes must journey into space and to the very house of the enemy itself, to rescue their brother before his mind is destroyed...
As The Triceratons offer Earth's people a final chance to hand over The Fugitoid, the Turtles meet up with unexpected allies that aid them in rescuing their brother...but will they be too late to save the planet?
As the Triceraton forces begin to evacuate, the Turtles return from space and find someone waiting for them when they arrive - the Fugitoid! Can they save their friend and prevent the invasion from happening all over again?
The TMNT and Fugitoid are captured by the sinister Agent Bishop. Master Splinter assembles a special team to free his sons - unfortunately the team includes Casey! Can they rescue the boys in time?
As an all out war is brewing between the Federation and the Triceratons, the Fugitoid is captured. The TMNT escape from Bishop and free Leatherhead, but is it too late for the Fugitoid? And what plans are afoot in the bowels of the Triceraton ship?
In the aftermath of the Triceraton invasion, the devastated New York soon plays host to the return of one of the Turtles' greatest foes...who hires two new ones.
Leatherhead find himself the target of a skilled big game hunter who makes the sewers his personal jungle...
The Turtles and Casey return to a familiar location to recuperate from thier recent trouble...only to find predjudiced survivors of the Triceraton invasion waiting for them...not to mention an ackward apperance from Casey's mother
Leonardo and Michelangelo meet up with caped crusader Nobody and attempt to help him out...well..Mikey does anyway...
April wants to perfect her ninjitsu skills and asks for the Turtles' help, but the Turtles know from previous experiance at a young age that sometimes the wrong teacher can be worse than NO teacher
In an adventure set during the festive season, Michaelangelo runs foul of a group of criminals hoping to attain a profit off of ""Orphan Alien Dolls""
Forces loyal to The Shredder commence a salvage operation of the Triceraton technology, leading the Turtles into an encounter with new and improved Foot mechs.
An ancient creature from long ago has been awakened, and is feeding on the fears, and desires of the humans it ensnares...which includes Angel's brother, can the Turtles overcome thier own personal flaws and be strong enough to defeat the creature and res
The Turtles battle The Foot for possesion of a Triceraton Antigravity Generator, which is keeping the city of Beijing anchored to the very sky above them
When a planetary allignment re-energises the subterranean crystal moon, the Turtles gain the oppertunity to finally learn the truth of the Underground
When time travel sorceress in training Renet accidentally sends the Turtles and herself into the past...our heroes meet more than just a powerful sorcerer, they also find old enemies, in a way, that hope to make a major impact in the future...and their pr
There's no honour among theives, as Hun is on a quest to rescue an enemy from a nemesis they both share...but when the Turtles are soon dragged into this private war, it ain't going to be pretty.
When a dimension crossing enemy scatters each of the Turtles across time and space, Mickey is the first to feel the effects of thier predicament when he arrives in a world where super-heroes are common place, and the dangers are still just as devastating.
With his brothers scattered across time and space, therfore ""Off-Season"" so to speak, Raphael must adapt to his environment in order to survive...what kind of dangers come with being a Planet Racer? And will Raph's ""Life Cycle"" run out before he can find
Donatello finds himself in an alternate, dystopian reality...The Shredder is in control, familiar faces have been drastically and literally altered...is there no hope?
Leonardo, seperated from his brothers, finds himself in a relm that,in different circumstances, he could see as home...
A return to the Battle Nexus alongside Miyamoto Usagi leads Leonardo to a fateful confrontation with the benevolant Daimyo, but when Leonardo is cast into prison, all hope to recover the remaining Turtles seems lost...
Agent Bishop's scheme to create the ultimate mutant weapon is only a HAIR away from completion...rat hair, that is, can the Turtles stop him before harm comes to their rodent sensei?
It's a gathering of old enemies and allies as The Shredder prepares to use the ultimate means of transport to spread his evil amongst the stars once more
The time is now, trapped aboard Shredders' starship, the Turtles prepare to engage in a duel to determine the very destiny of the universe, the final battle with The Shredder...has begun.
The Turtles hide out at Casey's farm to recover from their battle with the Shredder. However the ghosts of Casey's past come back to haunt him when his cousin Sid arrives with a gang in tow...
The Turtles bear witness to a rumble in the urban jungle between two alien princesses, fighting for the right to party and rule. Pistols at twenty paces. Tally ho.
Ascending to new heights, the Turtles aid the winged warrior named Raptarr against the renegade Mephos to save the floating city of the Avians.
The Turtles face a species of the deep, and when April gets too close to the action, she grasps a truth behind the current of environmental consequence.
Casey and Leo investigate a series of large-scale robberies. Not surprisingly, Hun and the Purple Dragon are to blame. However one of their hauls is a crate that should never have been opened!
Casey and the Turtles are practising their hide-and-seek skills at an abandoned warehouse complex. All the while, a strangely familiar figure watches them from the shadows - with an army of rats at his command!
A return to the Battle Nexus, a time to fight, is Mikey bound for glory once more?
On Halloween night, a mustachioed man visits April, expressing interest in a rather unusual item: a hideous six-armed idol. But the statue is no ordinary junkshop knickknack; it can be used to invoke a horde of imps that proceed to clean out the city and bring its spoils to their master, a criminal who calls himself The King of Thieves.
The Turtles learn first hand what it means to have a "Bad Shell Day" as calamity after calamity befalls them. This time the Turtles may not be able to save everybody...
When the President of the United States arrives in New York City, an invasion of what seems to be aliens attacks at the most inconvenient time. However, the Turtles investigate this "invasion" and find out that Bishop is behind it. The question is - why?
The Purple Dragons have evolved from a basic street gang to a smuggling syndicate that works throughout New York. Leonardo goes with Casey to put an end to Hun's plans. However, Casey and the recently angry Leo will have to control their own fury if they want to bring justice-- and not just veangeance-- out of this.
The Turtles help Nobody protect an old man when he witnesses Jengo, leader of the Turks, harming a Turks member. Can the Turtles and Nobody stop the Turks?
Usagi and Gen come to New York for a visit with the Turtles. Gen gets a little carried away by the bright lights of the big city and goes wandering off on his own. And if the modern world wasn't dangerous enough, an assassin from Usagi's world has followed Usagi and Gen. His target: Leonardo.
It is time for Leonardo to move on. Splinter sends Leo to a new sensei, or rather, a very old sensei. The journey is long and perilous. Can Leonardo look into himself and find the right answers to his questions? Can he even find the right questions?
While Leonardo is in Japan studying with the Ancient One, Karai as the new Shredder makes her attack. Will Leo return to New York? Will he find out what happened to his home and his family? And, have Splinter and Turtles really been destroyed?
Leonardo returns from Japan to find the lair in ruins and his family nowhere to be seen. As he investigates he finds that the Foot is back to full strength - with Karai as their leader. Since the Foot believe Leo to be dead, he puts all that he has learnt from the Anicent One into practice...
Bishop has too deal with the consequenses of his actions when people and animals all over New York starts mutating into horrible beasts after his "alien" invasion.
For several years April's uncle Augustus (aka Augie) has been missing. One day she gets a message from him via the mysterious artifact last seen in season 2 "April's Artifact", and April and Donatello has to go too another dimension and save him
When Stockman decides to clone himslf, a new body everything goes wrong. The body's rapid decomposition causes its mind to deteriorate, and he goes after April in revenge to the destruction of his mousers.
All settled in their new lair, but with no electricity Leonardo tells his brothers and Splinter a tale about love and betrayal...and a pet rat.
The evil Savanti Romero is back for revenge on the Turtles after being humiliated by them. He sends on a trip through time where no humans have been before
The Turtles' only option to escape the Cretaceous is to retrieve the Time Scepter from Savanti, but it will not be easy, as he has mastered how to use it. His first plan is to destroy Renet, absorb her powers, then have enough assurance to easily kill the Turtles.
With the outbreak-mutant situation the Turtles feel they have to deal with and Donatello sick his brothers leave him with Casey and April for care. But Donatello is not sick but in the last stages of a second mutation.
With Donatello sick the Turtles are desperate. So desperate that they decide to try and sneak into Bishops facility, where they realize they have to make a deal with the devil if they want to cure Donatello
To cure Donatello the Turtles made a deal with the devil aka Bishop. Now they have to retrive a pendant that is supposed to help Bishop in his research. The thing is that the pendant is in the heart of the Foot-building, and Karai won't just hand it over
After the Turtles were able to cure Donatello's mutation, a group of ninjas confronts the Turtles to tell them about a battle between good and evil that will decide the fate of the world.
The Ninja Tribunal has called on eight acolytes to stop the coming evil. But first they have to train and be taught some important lessons that may mean the difference between life and death.
The Turtles begin training with the mysterious Ninja Tribunal, experimenting with new powers and weapons. After securing the first of the Tribunal’s Lost Artifacts, our heroes learn to their horror that the “great evil” they are destined to face is the long-imprisoned spirit of the one, true Shredder!
The Turtles train with the Ninja Tribunal to prevent the resurrection of the Shredder. But when Splinter and the Ancient One express serious doubts about trusting the Tribunal, the Turtles are confused. If they all agree on the goal, why the doubts? To explain the danger to the Turtles, Splinter and the Ancient One reveal the secret history of the Tribunal… including the true origin of the Shredder!
The Turtles and company continue their training under the Ninja Tribunal, learning to fight in the physical as well as mental and spiritual worlds. They’re going to need that knowledge, because the second artefact of the Shredder has been found, guarded by a horde of nasty Tengu demons that eat Acolytes for breakfast… literally!
Returning to the Tribunal Monastery with the second Shredder Artefact, things seem to be going well for our heroes when – deception! Old foes infiltrate the Monastery. With all three artefacts in the hands of evil, they plan a sneak attack on the Tribunal and their students with devastating results!
The Justice Force is expanding its ranks, and Mikey plans on joining up as Turtle Titan!, while Leo is more concerned in alerting them to the threat of the original Shredder. But when Nano reappears (thanks to Bishop and Baxter Stockman), everything quickly spirals out of control into a super hero vs. nanotech slugfest! But has Nano come back as friend or foe? And will the Turtle Titan and Leo survive long enough to find out?
The original Shredder is resurrected by the Foot Mystics, whose first agenda is to destroy Karai – the “false Shredder.” And, while the Turtles are enemies of both Shredders, they realize that if the original Shredder wins, his goal of creating a world of destruction, devastation and chaos will be one huge step closer to reality. So, like it or not, they have to help Karai – even while she’s intent on killing them!
In their attempt to rescue Karai from the Foot Mystics and new Shredder, the Turtles wind up in a raging battle filled with magic and martial arts where they use everything the Tribunal taught them - but will it be enough to escape with Karai and their lives?
Weary after their first battle with the new Shredder, the Turtles doubt they can defeat him. To lift their spirits, Splinter and the Ancient One shares a tale of the Turtles’ toddler days. The story reveals that though the Turtles were small, they overcame impossible odds to defeat a phantom bent on reviving the Shredder, though they may not remember it.
Shredder begins to build a new dynasty in New York, transforming the whole island into a hellish nightmare. The Turtles team up with Karai in a daring plan to direct Shredder’s energy against him from mystical “Keystones” around Manhattan… but will it be enough?
The demonic Shredder has transformed New York City into a nightmare version of Feudal Japan and the rest of the world is next! But the Turtles have a plan, and if it takes allying themselves with some of their former enemies to bring the fight to the Shredder, so be it… because if they fail, there is no tomorrow!
With the help of allies and enemies alike, the Turtles have fought their way through a demonic version of New York to confront the Shredder once and for all! This night the Teenage Mutant Ninja Turtles will meet their destinies… whether it be to live or die!
With the help of Cody Jones, the future great-grandson of Casey Jones and April O'Neil, our heroes are transported 99 years into the future, where they do battle with all new enemies.
The Turtles need parts to rebuild the time machine that brought them to the future. However Cody's shady uncle and caretaker Darrius Dun has other plans...
An energy based entity known as Viral escapes from her prison and seeks the technological secrets held at O'Neill Tech. There's just one thing she didn't count on : The TMNT!
Leo and Raph decide to go to and see a wrestling match, but when a banned contestant - Triple Threat - crashes the tournament, Raphael decide to stop the wrestler before he goes too far.
Mike has been playing his new favourite video game for three days straight. And when the sequel is announced, he is anything but calm. However Jammerhead and his thugs have their own plans for the impending release...
The Turtles are shocked to find out one of their old foes from the past is still alive and well in the year 2105. Bishop has become a top agent in Earth's government, and even though he isn't after the Turtles, they don't trust him. But Bishop offers the Turtles an ultimatum if they wish to stop crime...
After Mikey finds out Cody has never seen a horror-movie he decides to take him and his brothers to a horror-festival, only to come face to face with a real monster of horror - Sh'okanabo!
Mike finds that in 2105 someone else has taken on the mantle of Turtle Titan. Furious, he tracks down and challenges the 'imposter'. However when Triple Threat shows up and begins to create havoc, the two costumed heroes must put aside their differences...
In an effort to fix the time-window Cody and The Turtles go to the moon to retrieve a special alloy, but are interrupted by The Inuwashi Gunjin - who under Darrius' instructions - are to leave none of them alive!
Jammerhead and the Street Phantoms use a device called a "Bodyjacker" which allows them to take over anyone's body - including the Turtles! How do you fight an enemy when it could be anyone?
After an outing downtown, Mikey starts behaving strangely – as in super strength, green-slime-spewing strangely. The reason, the Turtles soon discover, is that Mikey has been “implanted” by one of Sh’Okanabo’s “gene-seeds”. Sh’Okanabo has begun his first test of introducing the seeds into the general population in order to propagate his alien race, transforming ordinary folks into monstrous Kanabo drones! But will our heroes be able to stop him before becoming “implanted” themselves?
Darius Dun and Sh'Okanabo decide to join forces to get rid of the Turtles. Sh'Okanabo's new creations pose a huge threat - Enter the Dark Turtles!
While in Cody's trophy-room the Turtles find an old journal written by April and Casey. Feeling homesick they decide to read some of its content...big mistake.
In a effort to prove to Sh'Okanabo that she might still be useful to him, Viral sets a trap that digitises and sucks the Turtles into a prototype game system, the Gaminator.
Splinter announces that the Turtles will graduate to the next ninja rank, Chunin, for using the 3 pillars of life: being invisible, indestructible and showing insight. Except for Michelangelo, who skipped the exam to play video games. But Splinter gives him a last chance to graduate with his brothers.
Sh'Okanabo unleashes a time storm on New York, putting the Turtles in the middle of chaos, where foes from the past and present collide!
Jammerhead escapes from jail, and with the help of some new technology he has gotten his hands on, is determined to confront the Turtles. At the same time, Starlee's alien family visits Starlee on earth.
When Torbin Zixx breaks into O'Neil Tech, the Turtles have to chase him through the city and end up on an interstellar trip. But what are his true intentions?
Dear old Uncle Darius and his evil pets have returned. Cody tries fighting Darius with his Turtle-X battle armor, but falls to Darius's superior armor. Can Cody turn the tables on his uncle, or is this the end of both him and the Turtles?
Turtle-X is on a rampage and it's not Cody's fault! Someone is controlling Turtle-X remotely but the question is who and why? And more importantly, will the Turtles and Cody live long enough to find out!
The Turtles are entering a race as Team O'Neil. Donatello modified the Hovershell to become a top notch racing machine. Also, Triple Threat is destroying everyone's cars in the race. While they are racing, the Turtles meet an ally, Falcon. Can the Turtles survive the road rage?
An old enemy from the past returns, and he wants Bishop destroyed and only the Turtles can help him. However, when Bishop is kidnapped, the Turtles learn that before he became the Global President and cleaned up his act, he did some "dirty work" for the Earth Protection Force-- poaching and gene splicing aliens. It turns out that in 2055, there was a lab accident that had catastrophic results...
The Dark Turtles are tired of losing and being abused by Darius Dun. With Dun’s orders to destroy the Turtles looming, Dark Leo comes up with a plan to destroy his opponents from within!
A galactic collector who collects rare beings wants the Inuwashi Gunjin in his collection. With nowhere else to go, the Gunjin ask the Turtles for help.
Sh'Okanabo is finally ready for his last attack. The only obstacles between him and the Day of Awakening are the Turtles... aided by none other than Bishop.
Torbin Zixx was selling disintegrator weapons to aliens and cheated Big Red out of merchandise. As payback Zixx promises him an experimental matter transmitter he doesn't have - but Boss Zuko does. Meanwhile, a meteor made of dark matter is on a collision course to Earth. Can the turtles get the transmitter from Zuko and stop the meteor? Or will Zixx get there first?
When the Time Window is finally repaired, the Turtles enter into it to head home, but instead of finding themselves back in the lair, our heroes find themselves with Viral! She’s escaped from inside Serling and has infected the Window so that she can send her most hated enemies on a harrowing, helter-skelter trip through the past, present and future and make them pay for all the pain they’ve caused her!
When the Turtles are reunited with Casey and April, it's smiles all around ... until it becomes clear that Casey's being brainwashed by his new martial arts instructor, Master Khan, a devoted Foot operative. The Turtles must save Casey (and themselves) from this deadly Foot fanatic.
The Turtles journey into cyberspace as Cybernauts on a mission to save as much of Master Splinter as they can find. But, they find far more than they bargined for as an old foe is re-born in the digital world...
Casey and Raph head to Chinatown to find an engagement ring for April. They find one, all right. Too bad it has dark, transformational powers. Powers that are of interest to Hun and the Purple Dragons as well.
While Don focuses on collecting Splinter’s data bits, his brothers find themselves pulled into a war between The Foot and the Purple Dragons. But things get a lot worse when the cyber-Shredder finds a way out of the digital realm by taking over the powerful robotic body of his old crony, Baxter Stockman! With Splinter’s data bits just within his grasp, Don is forced to make a terrible choice, help his father or help save his brothers from the Shredder.
Serling, desperate to return to his own time, builds a makeshift Time Window. Unfortunately, he accidentally shrinks himself to five inches tall and goes on a time traveling adventure. Unfortunately, when he escapes the clutches of arguing Turtles, he is found by Wendell, an old man who has been hunting him since Serling destroyed his toy eighty years previously and wants to reproduce him.
Cyber Shredder releases a virus that wipes out the Turtles' memories and brainwashes them into thinking they are his loyal Foot minions.
The Cyber Shredder creates a web portal that he hopes will allow him to venture from cyberspace into the real world. The villain first tests the device by releasing all sorts of mutants and monsters from various online programs. The Turtles must take down the creatures before they tear the city apart… and shut down the web portal before Cyber Shredder is able to use it and enter into the real world!
The Turtles find more of Splinter's data bits embedded within Mikey's favorite online video game superquest and have to play the game to retrieve them from the treasure.
Shredder makes the turtles believe they have left cyberspace, when they are really still there giving him important information about how to build a portal.
The Shredder hacks into a computer grid reprograms every electronic device in N.Y.
When Raph gets hold of a cape that grants him super powers, an impressed Justice Force invites him into their ranks and Mikey gets super jealous. But when Dr. Malignus tries to get the cape for his own villainous designs, Mikey and Raph must put aside their differences to save the city!
The Turtles and Master Splinter get ready for April and Casey's wedding.
During a night of showing off their extreme sports gear, the Turtles are attacked by a monster from beneath the Earth. They trace the beast to a remote island where they uncover their old foe, Dr. Baxter Stockman, who has created vicious monstrosities to unleash on the unsuspecting public. Starting March 7, 2009, a series of 13 shorts, called "chapters," ranging from 90 seconds to two minutes in length began airing on The CW4Kids during episodes of TMNT: Back to the Sewer and Chaotic: M'arrillian Invasion, as well as being streamed on the 4Kids website a week in advance of airing on television. They comprise a single story called "Mayhem from Mutant Island."[7] On March 27, 2010 the 13 shorts were re-aired edited together under just the "Mayhem from Mutant Island" title as a so called "new" episode of TMNT: Back to the Sewer.
The 2003 Ninja Turtles find their 1987 originals captured and held hostage by Hun. The 2003 Turtles defeat Hun, and the Purple Dragons and rescue their classic originals and escape to the modern Turtles' Lair. Meanwhile, the Technodrome from the 1987 TV series along with Shredder, Krang, Bebop and Rocksteady are together again and fight both versions of the turtles. Meanwhile the classic Shredder, transports the Utrom Shredder back from the ice asteroid that he was sent to after the "Exodus" episode. The classic Shredder and Krang had no idea that the modern Shredder would turn against them and sets out to erase the entire Ninja Turtle Universe, starting all the way back to the 1984 Mirage Comic series to where the Ninja Turtles are as of today, including the 1987 TV series Turtles, the live-action turtles, all the comic book turtles, and the modern TV series Turtles.
Splinter teaches Michelangelo a lesson.
Michelangelo tells about Zanramon's space cruiser.
Raphael gives the scoop on the Monster Trapper gear
Raphael takes a Shreadnaut out for a spin
Karai, as the new Shredder, swears revenge on the turtles.
The turtles sneak into Bishop's lab for to retrieve a special treat.
