Peter Green, the stealthy stepdad, exploits Halloween's disguise to lure his blonde stepdaughter and her friends into a sinister foursome. As the teens innocently knock on doors, he lures them into his lair with promises of candy and drinks. Once inside, his evil plan unfolds. He watches, hidden, as the girls, dressed in revealing costumes, tease each other. Then, he makes his move, stripping off his mask, revealing his true intent.