While in her house alone dimwitted teenager Screw Frombehind (Aimee Graham) is attacked by "The Killer". While being chased, Screw accidentally runs into a bug zapper and her face gets electrocuted. The killer, feeling disappointed that he was not the cause of her death, lights up a cigarette, leading to the melting of his mask into a . The next day, new kid Dawson Deery () signs up at Bulimia Falls High School, meeting up with a new group of friends including Boner (), Slab (), Barbara () and Martina (), to whom Dawson takes a liking, though he is not sure if she is a . While the group discusses the death of Screw, they remain certain they are safe in school, not noticing the chaos that surrounds them, including a nuclear bomb being built and the killer attempting to murder a student as well as making an attempt on the presidents life.
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