On Wednesday the 11th, a dangerous psychopath nicknamed The Butcher, who escaped from a mental hospital for criminals, kills four teenagers. The maniac was also in possession of an antique dagger, with which he attacked the next night the gruff high school student Millie, but the girl managed to escape. The next day, Friday the 13th, Millie wakes up in an abandoned warehouse in the body of a maniac, and the Butcher himself - in a cozy girl's bedroom in the body of an innocent high school girl. Of course, he's more than happy to go to school, and Millie now has to figure out how to get back into her body without getting caught by the police.