When Ella heads out to collect space materials for the Clubhouse, she borrows Slippy's luckiest good luck charm, Mooncake; when Ella arrives at a black hole, Mooncake is bumped into its strong gravity.
After an exciting race, Ella's dad gives her a mysterious treasure map of their solar system. It was Slippy's dad who had given it to him when they were boys.
It's Ella's mom's birthday, and Ella wants to get her a present; she heads out to find something spectacular and runs into her friends Slippy and Madhu, who offer suggestions.
Slippy overloads his new rocket boosters and crashes on Jupiter's moon with Madhu; Madhu uses the process of elimination to narrow the choice down in time to save Slippy from a volcano eruption.
While playing ice hockey on Europa, an ice-covered moon of Jupiter, a stray puck hits Ella's wrist and injures Maggie; neither high speed asteroids nor the gravitational pull of Mars will stop the friends from saving Maggie.
Ella and Tilly race their cars on the ceiling at H.O.M.E. Station and crash, smashing Mom's crystal; the girls head to Diamond Planet and must replace the crystal before Mom gets home.
The gang is playing at the clubhouse when a silicon rocket goes missing; they decide to look in the atmosphere of Jupiter, where Ella can explore its Great Red Spot while Slippy looks for the elusive jellyfish.
When space junk smashes into their clubhouse, Ella and Slippy set off to fix the problem; while Ella wants to be rid of the junk by pushing it into a planet's atmosphere, Slippy's determined to reuse or at least recycle it.
Ella's family is packing for their annual Flare Star Day when Madhu asks Ella for help; Slippy is next to ask for her help racing the Gemini twins; not wanting to dissapoint Slippy, Ella continues to race but time is running out to make flare day.
The gang are excited to have all kinds of fun but Maggie dashes each one of their plans with her less-than-fun information. Slippy heads off in a slump but finds an old ship trapped in ice on Triton.
Ella finds the missing wheel of the Lunokhod 1, a Robotic Moon Rover featured in Dad's new Lunar Exploration Museum; when they power it up, the Rover races across the moon's surface with Ella, Slippy and Madhu in hot pursuit.
The gang is playing tag when Madhu is chased by a space probe; it turns out it is from Madwhy, Madhu's sibling; now Madhu wants something special to send back; Ella suggests moon water from Europa.
Slippy takes everyone on a constellation safari with his space sparkler; the Gemini Twins test the sparkler and promptly get lost in the Crab Nebula.
Mom and Ella are going to see a red dwarf star; when Dad gets called to work, Ella is forced to share Momella Day with her little sister, Tilly; Ella loses patience when Tilly keeps hijacking their plans.
Ella and Slippy are perfecting their triple corkscrews when Priya, Ella's best friend from Earth, surprises her with a visit. Priya performs a perfect triple corkscrew to everyone's amazement.
The gang is playing tag the meteoroid; Glitch fails to follow Slippy's instructions, but that's because Glitch found the comet Slippy has been tracking for months; Slippy is going to get to tag a comet, which means he can name it too.
One little golf ball can cause a crater the size of a house by hurtling through space.
Slippy makes special safety goggles for everyone so they can watch an eclipse; when Ella insists on going to watch a binary star supernova, Slippy opts out and heads off on his own.
Priya has arrived from Earth to complete a school project about Mars. She is unfamiliar with the planet and a bit nervous about its huge dust storms.
Ella's mum is an Enceladus 500 champion and Ella wants to be just like her mum. She plans to skate, scooter race and geyser jump her way to a trophy.
Slippy has heard a rumour that the abandoned outpost the gang plan to visit is haunted, so he brings his ghost detector goggles, just in case.
Madhu is excited to celebrate the anniversary of the day they all met; Madhu finds the rock where they met and realizes it's hurtling towards Uranus; they must stop it before it gets destroyed.
Ella is pet sitting Buttons, a friend's dog, on the day she has to finish a school project about Venus. She decides to take on both responsibilities at once by taking Buttons to Venus to get video footage. When thunder from the storms around Venus scare Buttons, he accidentally detaches himself from his pod & lands on the planet. Ella & her friends search frantically but can't find him. It's Buttons who finds Ella! Ella admits she made a bad decision but also learned fun facts for her project!
After hurting her leg, Ella has to take it easy for an entire day; a restless Ella visits her friends on Ceres to watch an ice volcano eruption; when the volcano doesn't erupt on schedule, they head off in search of more active volcanoes.
Ella and Slippy need to practice their rock-climbing skills but Ella prefers using her space boots rather than actually practicing. Then, Slippy is storing his inventions on the dark side of Mercury. He must find a way to move them before they melt.
Slippy needs iron to fix his spaceracer, so Ella tows him to a metal asteroid, where Glitch is instructed to cut off a small piece. But when Ella distracts him, he accidentally cuts the asteroid into two large pieces.
Tilly is disguised as SuperTilly, her alter-ego. When her dad asks her to send him his toolbox, SuperTilly sends it to the wrong place.
Madhu is sad to learn that the spectacular giant red star they were going to visit is now a small white dwarf star that will give off its energy until it goes dark. Ella and Slippy try to cheer Madhu but nothing works.
Ella and her friends go on a camping trip. As soon as they arrive at their camp site, a giant solar flare heads towards them and Maggie tells them to turn off their electronics.
Slippy, who must dispose of his inventions, decides to store them on Mercury instead. But, since Mercury rotates, what is sheltered will quickly turn extremely hot.
Ella admires her mother's new assistant, Angelie, who is also a champion surfer. When one of Ella's mother's discoveries disappears, Angelie offers to go looking for it and Ella rushes to accompany her.
Ella and her comrades discover the damaged Voyager 1 space probe at Sedna. Ella finds the golden disc at the probe and brings it back to her mother, who informs her about its significance.
When Angelie breaks Slippy's Jupiter gliding record, he's equally upset and fascinated by her surfboard. The two agree on a rematch and set out to work on their vehicles. They both ask Ella for help.
In the year 3021, on a space station somewhere between Mars and Jupiter in the Milky Way, eight-year-old Ella Ryder sets out with her friends on exciting adventures of discovery.
Ella has her best idea yet for a fun day. They will visit a nebula for each member of the family! When Dad's truck breaks down, they head to the Boomerang nebula.
Madhu is invited to dinner at Ella's house for Human Day. Madhu tries to make a good impression, but ends up making a few mistakes.
While observing a wandering planet, the heat from underground causes the icy crust of the planet to burst open, making Ella, Slippy and Madhu crash into its surface.
Ella and her friends play a star-riddle game that is a tradition in Slippy's family. In order to beat Slippy's cousins, they try to find some supergiant stars.
It's Priya's birthday so the gang is looking for something special as a gift for her. Ella suggests a birthday star, which is a star that is the same light years away as your age.
Ella accidentally ends up ruining some of her mother's old photos and feels terrible about it. Unable to replace them, she offers to recreate them instead.
Slippy promises his uncle he'll water his plants while he is away, but when he finally heads to the greenhouse, he discovers that the watering system he built is broken and the plants are dying.
When Slippy, Madhu and Ella head out to see a SuperNova, they arrive too late because of Slippy's endless preparations. The gang quickly decide to go zip-lining on Ganymede instead.
Ella, Tilly, Slippy and Madhu play a game on the moon when it starts to rumble. The ground cracks open and they fall into what they discover is a large network of tunnels underground.
After emptying Glitch's compartment of junk, Ella suggests they take it to a recycling planet called Vesta, where Madhu finds something that looks like a robot.
Slippy's cousin Gem, I-Lo's twin, wants to spend some time away from her brother, but he doesn't take her seriously.
Ella stretches the truth a bit when she tells Angelie she can comet surf. She decides to try but finds it's a lot harder than it looks. Slippy adds rockets to an asteroid so Ella can practice on that instead.
The gang is practicing to play Saturn Dance with Priya when she calls to tell them she is sick. She won't be able to come. Ella is very disappointed and wonders how they can cheer up Priya.
Ella and Slippy are practicing Pluto Jump Ride when Tilly begs to go too. Ella tells her it's too dangerous and gives her a practice jump stick before she leaves. Madhu arrives to play and finds Tilly alone.
Ella, Slippy and Madhu are spiral space diving when Ella explains what inspired the idea. It's a huge colourful spiral that Maggie is not able to identify. As she tries, she begins to glitch.
Ella finds her Nanny's old Hide and Peek device and hopes to beat Slippy's record for Hide and Seek! Gem and I.Lo are playing too. Slippy decides to make things more interesting by siphoning fuel from the Hide and Peek.
The Ryder family completes a drill in the event of a Starquake. Shields are deployed around Home and Dad's museum on the moon. The drill is a success but the shield on the moon is stuck open.
