With the Storybook of Legends still in Wonderland, Raven attempts to teleport her friends there despite still getting the hand of her powers. Apple, Raven, Briar, Lizzie, Kitty and Maddie end up in Wonderland in just days away from the Queen of Heats' birthday, but they end up at Wonderland High where they meet the charming Red and White Knights. However the school is ruled by Courtly Jester who attempts to keep the girls from graduating Wonderland High for her devious plans against the Queen of Hearts.

While attempting to help Frankie Stein learn more about her freakycool scaritage, the fashionably fierce ghoulfriends travel back in time to the first day ever of Monster High! There, they meet Sparky, a skullastic teen with an obsession for creating life. But when Sparky follows the ghouls through a killer time portal to modern-day Monster High, the event results in eight of them fusing together into four creeperiffic hybrid Monsters. Now, they'll really have to work together to control their bodies in the big Bitecentennial Play and stop one of Sparky's experiments from destroying imperfectly perfect Monster High!