Todd and three friends at Crowley High, a school secretly run by Satanists, encounter a cursed tome known as the Book of Pure Evil. Each episode features a student using the book to wish for something, but the wishes turn out to have dangerous consequences. Todd and his friends try to stop the book and the evil it brings, while also fighting against the Satanist cabal running the town, with help from a seemingly friendly guidance counselor who is actually a member of the cabal.