Horror sequel, starring Michael Ironside. On Prom Night in 1957, young Mary Lou Maloney (Lisa Schrage) was burned alive in a horrific accident after a prank went drastically wrong. High school principal Bill Nordham (Ironside) has kept his secret for thirty years, that he was the one responsible for Mary Lou's death. Nordham's son begins dating the Prom Queen of 1987, Vicki Carpenter (Wendy Lyon), but when Vicki discovers some old clothes in the school's costume room, she doesn't realise that they used to belong to Mary Lou. Before long a suspicious death forces Nordham to confront the truth - that the enraged spirit of Mary Lou has possessed Vicki Carpenter, and seeks her vengeance on the school.