In the series finale that's a flashback that shows the gang in high school, Uncle Grandpa, Pizza Steve, Mr. Gus, Tiger, Frankenstein and Belly Bag are all in detention and while the principal is using the bathroom, they all try to find ways to fight boredom and slowly start to build a friendship. After a fight, they all make up and Uncle Grandpa suggests they all live together and have fun adventures later on in the RV.
Uncle Grandpa wakes up from a night terror, so he goes to the "one who knows all", who is a mustache man he finds on another planet. Before receiving his help to stop night terrors, he ends up telling him all the dreams he had leading up to the nightmare he woke up from.
Upon seeing the gang have a fun time swimming and eating ice cream, Tiny Miracle realizes he wants to be a real boy.
Uncle Grandpa helps Samir overcome his paralyzing fear of the high dive.
Uncle Grandpa makes it hard for Pizza Steve to prove he's not a baby.
When Uncle Grandpa and Pizza Steve ruin Mr. Gus's night, the two of them go undercover as Mr. Gus's date.
Trying to enjoy dinner, Uncle Grandpa and the gang keep mysteriously being sent back and forth through time; they realize it's film transitioning and they find out the editor was sleeping & they wake him up. And, they put a stop to the transitioning.
After his underwear is stuck too tight, Uncle Grandpa calls upon the aid of HIS Uncle Grandpa, when that Uncle Grandpa fails, his Uncle Grandpa arrives, and things get out of control.
When the Boogie Man loses his mojo, Uncle Grandpa steps in to help.
Uncle Grandpa digs a hole, with the other Uncle Grandpa's down there in the hole, they hang out and plot to take down "The Overlord."
Uncle Grandpa and the gang learn of Pizza Steve's past stunt in the foodservice industry; Pizza Steve wasn't always the Pizza Steve they know and love.
Uncle Grandpa is in need of some extra cash, so he starts charging for his services.
Pizza Steve goes to great lengths in order to beat Mr. Gus at a game of chess.
Pizza Steve and Mr. Gus try to help Uncle Grandpa get an idea.
Uncle Grandpa visits the cartoon factory to get some answers about his roots. (Pete Browngardt stars as a cartoon version of himself.)
This episode is composed of four shorts; Late Night, Black Light: After the lightbulb in the UG RV living room breaks, Uncle Grandpa plugs in a fluorescent lightbulb, and things get pretty crazy. I Love My Friends: Uncle Grandpa accidentally breaks a tire that a homeless cat was living in and the gang discusses what to do with him. Uncle Grandpa vs Mr. Gus: In this Batman vs. Superman spoof, Mr. Gus is ordered by the President to destroy Uncle Grandpa for being too funny, and an epic battle ensues. Good Morning: Uncle Grandpa says his signature catchphrase to everyone in the world.
After Uncle Grandpa gets very outraged with how his day has been, Aunt Grandma arrives to make it worse; Uncle Grandpa must try to calm down before he's erased from existence by a rage judge machine.
Uncle Grandpa enlists a famous film director to help a kid improve his film acting skills.
Uncle Grandpa hosts a talk show featuring bands such as Mr. Gus and the Jurassic Jam, Giant Realistic Flying Rock Band and an appearance by Pizza Steve and a talking baloney sandwich.
Mr. Gus and Belly Bag are throwing a surprise party for Pizza Steve, as long as Uncle Grandpa doesn't spoil their surprise.
Uncle Grandpa and the gang must retrieve Tiger from the pound before she's adopted out in a musical-style episode.
Uncle Grandpa helps out a stinky cat who's down on his luck.
Uncle Grandpa helps a girl fall asleep by counting sheep, but one goes missing.
