Friends to the End, Part Three

With Finn's unwitting help, the Lich has slipped his chains and set out to finish his work of unmaking Ooo. Worse still, Jake's tampering with Ice King's crown has stirred GOLB, the very embodiment of chaos, from his slumber. Both heroes are locked inside their own minds while the Computer Kingdom flickers on the brink of collapse, and an apocalypse looms over the Land of Ooo. Story by Nick Winn, with a Derek Ballard backup.