Sheen ignores some notes in Jimmy's lab and he blasts off into space and lands on a strange planet named "Zeenu" and destroys Dorkus's house. When he gets there he meets the Emporer and his daughter, Princess Oomlet who says that she loves Sheen. He also meets Dorkus. He meets a talking chimpanzee from earth named Nesmith. He meets other aliens including one that looked like his old friend Carl from Jimmy Neutron all in one day!
The Emperor tries to prepare Sheen for a visit from Boh-Rok the Destroyer, the most powerful and horrible creature in all of Zeenu./Dorkus vows revenge when his new next door neighbor Sheen upstages his elegant game night with a wild raging party.
Sheen and the guys infiltrate a vicious pack of Chocktows to help Aseefa find her missing pet, Chock-Chock./Princess Oom's gigantic, two-headed ex-boyfriend, Grish the Beautiful, challenges Sheen to a battle of honor.
Sheen accidentally gives Princess Oom the most important part of his rocket ship and has to find a way to get it back.Seeing an opportunity to destroy Sheen, Dorkus volunteers to train him for the "Manhood Trial by Fire."
Nesmith and Doppy are worried about Sheen's erratic behavior. Dorkus suggests therapy by man-eating Fusterbeest./Sheen introduces the justice system to Zeenu when he has to defend Nesmith who has been accused of eating the Emperor's favorite pet.
Obsessed with setting world records, Sheen challenges competitive librarian acrobats to a book-stacking competition./Sheen grows a tortilla monster that threatens the city
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 to the masses so he can build a suit made of money, but his scheme backfires when his customers show up at his house for the goods.
Sheen vows to never bathe again and accidentally attracts a horde of destructive, filth-loving beasts.Sheen has to use his matchless wit to rid Zeenu and save his friends from a carnivorous, pretentious plant called the Dentamental.
While pet-sitting, Sheen accidentally gets Aseefa's pet Chocktow caught by Animal Control and has to rescue him before she returns./In an attempt to stop Princess Oom from liking and licking him, Sheen tries to get her back together 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 quickly turns into a Hall of Insults as Sheen and his friends are plagued by a flock of bird-like, rowdy, mocking blurgs. Sheen puts on a magic show that actually makes people disappear.
Sheen must train the Emperor's Guard to prepare for emergence of a legendary beast, the Londar.Accidentally chained to each other, Sheen and Dorkus are trapped underground and must work together to find a way out.
In order to help Aseefa, Sheen purchases a black market mustache and must deal with the consequences when it gets out of control.Sheen eats a berry that makes him huge and hazardous.
Sheen passes the blame on breaking the Doppweiller's figurine collection to Doppy's new pet, Doaty, and must make things right before Doaty is sent to the pound.
Sheen has to figure out a way to lead the Celebration of Legs Parade despite the fact that he's turning into an eelSheen and Nesmith rescue Doppy from a group of gloop thieves, the Gashlubbs.
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.
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 improve Zeenu's government, Sheen introduces the concept of Clown College.Zeenu is attacked a swarm of wedgie-giving barbarians and it's up to Sheen to stop them.