Finn and Jake discover a suitcase in a treasure hunt and find several videotapes in them, which they soon watch at their house. Seeing details of the Ice King's personal life, Finn and Jake keep viewing the tapes to discover his evil secret.
While eating pies at Princess Wildberry's place, Finn and Jake discover a tiny cat with intentions to murder. This cat, named Me-Mow, poisons Jake and threatens to kill him with the rest of the poison, unless he kills the princess.
Finn fights off a deer that was licking one of the candy people, but this deer knocks both him and Jake out. While Finn's lower body is now in a cast, Jake's head is so badly hurt that he believes it's his birthday and that everyone is hiding from him in preparation for a surprise party, when this isn't actually the case.moreless
Ever since Cinnamon Bun ate a piece of zombie flesh, he and other creatures have been turning into zombies. Princess Bubblegum has the formula for an antidote, but when she is turned into a zombie, Finn, Jake, Lady Rainicorn and Lumpy Space Princess have to make the antidote themselves.
After Finn rejects food that Jake has prepared for the both of them, they go to Tree Trunks' house to have apple pie. Unfortunately, though, they find that the apples are all gone, so the three of them set out to find the one who stole the apples.
What Was Missing is the tenth episode in season three of Adventure Time. To defeat the Door Lord, Jake, Finn, Marceline, and Princess Bubblegum must work together and form a band. They take him on with Finn beatboxing, Jake playing the viola, Marceline playing the bass guitar and Princess Bubblegum playing Beemo and singing.moreless
Memory of a Memory is the third episode in the third season of Adventure Time. Marceline casts a sleeping spell on herself. To wake her up, a wizard transports Jake and Finn into her mind. However, it turns out the wizard is her ex-boyfriend, and tricks them into erasing the memory of the break-up.moreless