Clarissa is a very smart and beautiful, seventeen year old girl. As she walks into her fourth period class one Friday afternoon, she notices an attractive male substitute standing by the board. He is going to be filling in for two weeks. Lucky her. Or so she thinks. What seems like innocent flirting, quickly turns into a sadistic, tortuous game. Clarissa must fight to survive, against an agressive, temperamental man, who will stop at nothing to have it his way.