There's a new "Nice King" in Ooo, and he looks kinda like someone else we know.

When Jake becomes sick, the only thing that can cure him is a good story, so he asks Finn to go out and find one. The story must have excitement, romance, suspense and, of course, a happy ending. But when nothing interesting happens, Finn tries to make the story happen, accidentally turning the forest animals against each other... and him!