Todd discovers The Book Of Pure Evil and decides to use The Book to transform himself into a heavy metal guitar god to impress Jenny. The book's evil powers are now unleashed on Crowley High, and havoc ensues.

Hannah is desperate to win the science fair so she uses the book to make a small magical creature that strangely looks like Todd.

Todd's attempts to make Jenny jealous backfires and nearly gets him and Curtis eaten by a couple of rock'n'roll zombies.

When Crowley High's only gay student uses The Book to make every boy gay like him, Todd's feelings for Jenny are put to the test.

Todd, who has a strange fear of fat people, is forced to fight an evil monster made from human fat when an obesity epidemic takes over Crowley High.

When Crowley High is overcome with an evil smoke that turns the students stupid, Hannah must step up and save the entire student body before it descends into a perverse chaos of moronitude.