Gwen and Tasha are forced to work together when the spirit of a past Griffin teacher is unleashed in the school. A discipline freak, this Latin teacher with a penchant for black magic has unleashed a spell that turns all disagreeable students into models of conformity – and a determination to punish the student responsible for imprisoning him fifty years ago, Reine's grandmother. Gwen and Tasha join forces to defeat Mr. Bluton, and in the process mend their friendship. But Gwen doesn't realize that Reine has been awakened to magic.