Quand Todd se rend compte que sa future belle mère est une Tropopkin, un monstre carnivore, personne ne le croit. Mais les morts commencent à s'accumuler. Todd has an imagination driven by comic book. So when he accuses his soon-to-be stepmother of being a monster, no one believes him. When neighbors start turning up dead, it becomes a race against time for Todd to stop this hideous, carnivorous creature from marrying his dad and ruining his life.