Mary Murdock, a college student, thinks she's hit and killed a cat with her car driving home drunk from a party. She is horrified beyond words when she gets home and discovers a man's nearly dead body impaled on the bumper of her Jeep. Terrified and irrational, Mary is faced with a series of decisions that determine her fate.

As retribution a psychopathic stalker known only as The Laugh attacks the now adult girls who picked on his sick childhood tendencies. Tabitha, Shelby and Lisa become the target of a madman with a serious adolescent grudge.