Elementals - Adventure Time:Fionna and Cake

A few years after the attack from Scarab, Fionna and Cake had lived satisfying lives in their new cannon universe, living in harmony with the prisoners that were once entrapped by said red bug man. But as magic starts to submerge itself with the world that was once the Land of Aaa, the four elementals begin to revert back. The three princes and one condescending old man revert back to their old forms and gain new memories, revealing secrets and desires they never knew they had. Will this new realization of their power lead them to steer towards their destiny or even farther from it?