Jimmy Neutron's goofy pal, Sheen Estevez accidentally gets himself sent to another planet, millions of light-years from Earth.
Sheen accidentally launches into outer space and crashes on the planet Zeenu. The Emperor of Zeenu mistakes him for a genius and appoints him as Super High Royal Supreme Advisor, the jealous Dorkus vows to destroy him, and he befriends a space chimp.
Dorkus enlists a bad tutor for Sheen in his attempts to try and sabotage his meeting with Bok-Rok the Destroyer. Dorkus vows to seek revenge against Sheen after he disrupts the villain's game night with a loud party.
When Aseefa discovers that Chock Chock, her pet Chocktow, has run away she comes to Sheen for help. Princess Oom's is in love with Sheen. Her gigantic, two-headed ex-boyfriend Grish is not amused about that...
Sheen helps The Emperor to get the perfect gift for Princess Oom's "Popping Out Day", in order to get his own honor day. Sheen has to complete the "Manhood Trial by Fire", to take part at a sacred Zeenu-ceremomy.
Nesmith and Doppy are worried about Sheen's erratic behavior. Sheen introduces the justice system to Zeenu when Mr. Nesmith is accused of eating the emperor's pet.
Obsessed with setting world records, Sheen challenges competitive librarian acrobats to a book-stacking competition. Sheen grows a tortilla monster that threatens the citizens of Zeenu.
Sheen invents an "all get, no give" holiday that nearly destroys him. Aseefa is imprisoned for making a scary face, and it's up to Sheen to break her out.
Sheen and Aseefa star in Dorkus' play, unaware that it's been riddled with booby traps. Sheen sells a non-existent product so he can build a suit out of money.
Sheen vows to never bathe again and accidentally attracts a horde of destructive, filth-loving beasts. Sheen must save his friends from a carnivorous plant.
Sheen accidentally gets Aseefa's pet caught by animal control. Sheen tries to reunite Princess Oom with her ex-boyfriend.
Sheen teaches Zeenu his version of baseball. Doppy's parents fear their son is becoming too courageous when he and Sheen form the Monster-Fighting Combat Strike Force.
The Emperor's Royal Ball of Compliments turns into a Hall of Insults. Sheen puts on a magic show that actually makes people disappear.
The Emperor leaves Sheen in charge of the kingdom when he goes out of town. Sheen becomes a doctor and sets up a clinic in Zeenu.
Sheen starts a new art movement. Sheen does not want Aseefa to know that he has to go.
Sheen trains the Emperor's Guard to prepare for the emergence of a legendary beast. Sheen and Dorkus must work together when they are chained to each other and trapped underground.
Sheen uses his detective skills to find Nesmith's missing hat. Sheen gets stuck to Oom's tongue.
When Nesmith loses his ability to speak, Sheen must save the planet using the awesome power of ventriloquism. Sheen agrees to help Aseefa get her Roove back.
Sheen purchases a black market mustache to help Aseefa. Sheen eats a berry that makes him huge and hazardous.
Sheen and Doppy break a collector's item and need to find a replacement. The food in Sheen's new restaurant is awful... and things are about to get worse.
Sheen has to figure out a way to lead the Celebration of Legs Parade despite the fact that he's turning into an eel Sheen and Nesmith rescue Doppy from a group of gloop thieves, the Gashlubbs.
After accidentally waking the Empress up during her beauty sleep, Sheen must help her fall back asleep before she makes everyone's lives miserable. In order to keep his new baby Drakbog, Sheen has to civilize it using parenting tips from Dorkus.
Sheen enters a flying bug saucer race. To avoid Oom's advances, Sheen fakes an illness called "dance fever" that actually starts spreading to other Zeenuians.
Thinking Nesmith is ill, Sheen, Doppy and Aseefa go on a harrowing quest to find the only thing that can cure him: a banana.
Sheen helps Aseefa get through her one night of Tahlak Pow where she turns into a vicious, rampaging beast... Sheen tries to keep Zeenu safe from Baby Arms Banarog, a desperado with evil breath...
To get Pinter closer to Sheen, Dorkus creates the Sidekick Exchange Program. But Dorkus doesn't realize that this means he gets Doppy for a sidekick! Zeenu is attacked by a swarm of wedgie-giving barbarians and it's up to Sheen to stop them.
