Headmaster Farley's back and he's ready for revenge, but an unexpected visit from his estranged sister brings monstrous results as she takes over Splurch Academy. Forced to retreat to his laboratory, he hatches a plan to reclaim the school. Meanwhile, Cody Mack and the other boys are pitted against their new classmates-the girls of Priscilla Prim Academy for Precious and Proper Young Ladies.