Trisha Conrad is dating Gary Fresno but is forced to attend the prom with Matty Winger, the biggest geek in school, just because his father is an important business partner of Mr. Conrad. Trisha goes with Matty, but at the prom she humiliates him in front of the whole school. Soon Trisha begins receiving threatening notes, and assumes Matty is responsible until he is found dead. Trisha later finds out that Mary O'Connor is the culprit; she hates Trisha for stealing her boyfriend Gary.