When a disturbed high school student, dressed in a prom suit and wearing a clown mask, named Chase Lester, kills the family of his ex-girlfriend and classmate named Astrid, who he loves, in a deranged attempt to force her into a return relationship with him, the boy is captured and sent to prison. However, a year later, at her high school prom, Astrid is about to come face to face with the killer once again. Will Astrid and her friends escape the psychopath?
