A night of Spring Break partying turns into a living nightmare for student Mary Murdock (Laura Breckenridge) after hitting a bump on a dark road only to find a man dangling from her car's bumper. Panicked, Mary frantically beats him unconscious, buries him in the woods and returns home to cover her tracks. But when it becomes clear that her victim survived her brutal attack and wants her dead, Mary stops worrying about evidence and becomes more concerned with living through the night.