After being given a 24-hour leave from prison, in exchange for which she’ll agree to testify against her mobster boyfriend, Cocoa hits the streets, but quickly discovers that violence lurks around every corner.

A nerdy high school super whiz experiments with a chemical which will transform his guinea pig "Mr. Mumps" from a gentle pet into a ravenous monster. In a fit of rage against his tormentors at the high school, Vernon Potts goes on a killing spree, eliminating all of those who ever picked on him - the Gym Coach, the School Jock, The Creepy Janitor & his hated teacher, Ms. Grindstaff.

A black high school student is caught dating a white girl by the girl's brother. He and his biker gang beat the boy to death. The boy's brother, who is a member of a black biker gang, hears about it and comes to town to avenge his brother's death.