Betty knocks out Ice King and reveals that she wants to use the jewels to go back in time and stop Simon from transforming into Ice King. Ice King, still oblivious to her plans accidentally ruins her spell causing her to get transported to Mars where she meets Normal Man. Lumpy Space Princess rescues Finn from the candy inhabitants as Princess Bubblegum enacts her plan to convert the rest of Ooo into candy while Patience freezes herself again. Finn realizes that LSP's immunity means that she is the anti-elemental. Ice King arrives with the gems and Lumpy Space Princess is able to transform all of Ooo back to normal. However, Jake comes back resembling his shapeshifter parent. Despite this, Finn is glad that he is reunited with his brother.
Elenco: Jeremy Shada , John DiMaggio , Tom Kenny , Olivia Olson , Dee Bradley Baker , Hynden Walch , Pendleton Ward , Niki Yang , Steve Little , Polly Lou Livingston , Jessica DiCicco , Niki Yang , Maria Bamford .