Thirty years after slashing a Hamilton High couple on Prom Night 1957, psychotic priest Father Jonas gets loose from the chapel basement where the other church fathers had been secretly keeping him locked up and drugged.

Mary Lou, the prom queen burned to death by her boyfriend back in the fifties, has escaped from hell and is once again walking the hallways of Hamilton High School, looking for blood.

When Hamilton High’s Prom Queen of 1957, Mary Lou Maloney, is killed by her jilted boyfriend, she comes back for revenge thirty years later.