Kevin and his girlfriend Evelyn are camping in the woods when she is abducted and impregnated by otherworldly beings. As the entity inside her begins to grow at a rapid rate, Evelyn’s cravings can only be satiated by the taste of human flesh. When she brutally attacks a doctor, they go on the run to the big city where they can find help to remove the embryo that is slowly taking over Evelyn’s body.