Now that the mad king is dead, everyone will live happily ever after; however, Maleficent is wary. The kingdom is on the verge of civil war, a dark army is approaching from the south, and King Philip is too shady to be trusted. Then Diaval suddenly decides he is not happy being Maleficent's minion any more. Now Maleficent must harden her heart to save the kingdom again.

Travel back in time to when Simon and Marcy were just starting out! Who was that pink goo that gave Simon the chicken soup? Where does Princess Bubblegum come in, and what was her relationship with Marceline? This series gives insight to the beginning years of Marceline the Vampire Queen, as well as the Ice King and the mysterious Princess Bubblegum.