Ann casts a spell that is intended to bring back Adam's missing mother. But instead, Ann's unwieldy magic sends Adam, Sally and Watch into a parallel dimension that resembles a post-apocalyptic Spooksville.

Sally is none too thrilled when Ann transfers to Lizzie Borden High, but they must put aside their differences to overcome a blood-sucking plant from another dimension whose pollen puts the entire town, including Adam and Watch, under its evil control.