Rebellious high school senior Johnny Grissom is murdered while on a drunken joyride. Soon, Johnny's classmates turn up dead, murdered by an unknown assailant. Johnny's best friend Eric begins to suspect Johnny has returned from the grave to wreak havoc on those who wronged him.

Camden, who suffers from agoraphobia, the fear of open spaces, takes in roommate Randy Tommy Sweeney, who suffers from claustrophobia, the fear of closed spaces. Unfortunately, Randy turns out to be a serial killer, and Camden becomes a prisoner in his own apartment.