'James', Finn & Jake, and Princess Bubblegum discover that James has been cloned 25 times, and that the original zombie James is returning - and not in a good way.
Once a month, while Finn and Jake are asleep, Jake's tail comes to life. It travels to a little circus in the forest, where it is known as Blue Nose the sad faced clown. But Blue Nose and the ringmaster come to a disagreement regarding the treatment of the "beast" Goralina.
After the death of Prismo, Finn and Jake do a funeral ritual. But when Jake eats the last pickle of the jar of pickles that Prismo made for him, he is transported to Prismo's lair. Will Finn be able to save him?
Finn and Jake go camping in the woods. When they go to sleep, Finn has an out-of-body experience and visits other creatures all around Ooo while he slowly ascends to space.
Feeling unfulfilled, both Lemongrab and Finn take an introspective journey into the Mountain of Matthew. Inside, they are faced with their desires, their fears and themselves, and must make a pivotal choice.
Jake's son T.V. discovers a mysterious diary in the dried-up moat of the Candy Kingdom, and becomes obsessed with finding out more about the writer known only as "B.P."