Adventure Time

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.

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.