After killing an eight-year-old boy who happens to be Paco's brother, 16-year-old Irish-American hoodlum Mick O'Brien is sent to the Rainford Juvenile Correctional Facility rather than a state prison for adults. Vowing revenge, Paco rapes Mick's girlfriend, gets caught and sent to the same prison where he re-works his revenge plan, and Mick has no choice but to defend himself.