Finn and Jake are headed back to the Land of Ooo.

Adventure Time is an American animated television series created by Pendleton Ward for Cartoon Network. The series follows the adventures of Finn, a human boy, and his best friend and adoptive brother Jake, a dog with magical powers to change shape and grow and shrink at will. Finn and Jake live in the post-apocalyptic Land of Ooo. Along the way, they interact with the other main characters of the show: Princess Bubblegum, The Ice King, and Marceline the Vampire Queen.