Jason, Ellie and Matt recount how Matt "ruined their lives" by accidentally turning them into superheroes and how they unwittingly released their new archenemy Stankfoot and Blacktop.
Jason contemplates quitting the superhero business when he has trouble controlling his powers. While the owner of a store helps him to figure it how, Stankfoot creates a companion called Dark Materia to rule by his side but ends up creating someone crazier & more power hungry than he is. It's never explained why Jason's powers went haywire in the first place.
On his father's birthday Dr. Stankfoot fondly remembers fishing with his dad but when he discovers the old fishing river has been dammed Stankfoot decides to blow up the dam and destroy the city. Meanwhile Ellie attempts to balance being a superhero and her fondness for the new boy in school & Matt tries to perfect an early danger warning device.
When Dr. Stankfoot's sleep is disturbed, he orders Blacktop to silence the noise by spreading a dangerous virus. In doing so, Blacktop infects the residents of Eden City, including Ellie. Realizing Blacktop is the key to help Ellie, Z-Strap and Kewl Breeze devise a plan that means shrinking Z-Strap and hunting inside Blacktop for the cure.
Jason, Ellie, and Matt struggle to work together as a real superhero team when Stankfoot unleashes a giant carnivorous plant that grows over New Eden City, absorbing half the population in one night.
Jason gets a dose of his own medicine when he encounters a loner mutant in Stankville and has to convince him to help rescue Matt who's been captured by a race of underground mechanical mutants who want to offer him up as a sacrifice.
The trio of superheroes, Z-Strap, Elastika & Kewl Breeze, must stop a mass of Zevo infected earth worms from destroying the city. Meanwhile, Brett Ronson III, attempts to persuade the Olympic committee to hold the games in New Eden City
The Zevo-3 must stop New Eden City founder and land developer, Brett Ronson III, from demolishing a rickety old hotel in Stankville that houses The Manglesons, a family of strange but sentient mutants.
Jason and his classmates are given Zevo infused eggs to take care of for a responsibility assignment. They end up hatching in to cute, purple, fluffy mutants, but is there more to the Curples then what meets the eye?
When Zevo-infused blood from a cut on Jason's hand gets on one of his childhood toys it turns in to a 50-foot tall robot. While Ellie and Matt try to stop this unstoppable robot, they learn about a possible connection between Jason and the robot from an unexpected source.
When Jason mistakes Matt's new food experiment for his breakfast it results in some very strange behavior. Dark Materia takes advantage of Jason's situation and uses him to her advantage, while Matt and Ellie learn that the food's effect may be worse than they realized.
After Matt's new invention goes awry the group losses their powers and must adjust back to having normal lives. When they begin to realize that helping people is more important than getting a few extra hours of sleep they get their powers back to get rid of an even more powerful Stankfoot and Dark Materia.
Cotilla discovers Kewl Breeze and Elastika as Z-Strap's sidekicks and posts a video of the group on her blog. When Z-strap's popularity goes through the roof, Ellie and Jason get into a fight. Ellie later ends up getting captured by Ronson as part of a "Divide and Conquer" scheme to eliminate Zevo-3.
Ronson throws a party for the families of New Eden City. But Ronson shows up with Dark Materia. And the party gets crashed by blacktop and the mutant pigs. Grams, Matt, and Ellie hold the of while Jason does some spying and discovers a connection between Ronson, Jason's parents and Stankfoot.
As Brett Ronson III High School's standardized testing day approaches, the Zevo-3 has bigger problems to worry about – their Zevo energy is mysteriously increasing off the charts, and unless they can find a way to stop it, they are all ticking time bombs waiting to go off.
When Stankfoot shockingly reveals that he may have a connection to Jason's late parents, Jason prods Grams for info and searches for clues which lead him to a deep secret within Ronson Tower and a surprising new outlook on his Grams.
Cotilla's online blog about mutated animals running wild in New Eden gets her into trouble with the city's shady founding father, Brett Ronson III. The Zevo-3 must rescue their captured friend and the mutant creatures before Ronson disposes with them all.
During Career Week at Brett Ronson III High School, Jason works at the 6–10 convenience store with Sagacity, Ellie rides along with paranormal paramedic, Florence, and Matt uncovers some strange goings-on at his parents' workplace – while Ronson decides to fight fire with fire and hires a trio of mutant bounty hunters to bring down the Zevo-3.
While helping Florence with a blood drive, the Zevo-3 kids learn of a break-in where the blood bags were actually drained, and that someone-or something-is snatching people off the streets of New Eden in the middle of the night.
When Bobby the Molok witnesses Brett Ronson's goon squad rescuing Dark Materia from Stankfoot's lair, he and Bug enlist the help of the Zevo-3. Ronson's actions are anything but chivalrous – he wants access to Dark Materia's unique powers over Zevo energy for his own nefarious purposes.
Jason struggles with his grasp on a reality when he wakes up one morning in a world where the Zevo accident never happened, his parents are alive, and the Zevo-3 is just a comic book creation of his own imagination.
The Zevo-3 spends their Spring Break at New Eden City's public beach and Dark Materia crashes in to eliminate them.
While Jason tries to prevent the horrible future he saw in a vision from happening, Ellie's driving lessons take a turn for the worse when she gets Stank Foot's old car.
An embarrassing picture reveals the true nature of Ronson's mutated form and also makes Jason and Ellie question whether their "relationship" is platonic or romantic.
A mishap causes a mutant cow and Matt to swap bodies. It's up to Jason and Ellie to find an antidote or Matt will become a mutant cow forever.
It's an all-out war between Ronson, Stankfoot, and Dark Materia, when the Zevo Compound is unleashed throughout New Eden City. Zevo-3 must find a way to stop them all and save their friends, families and homes.