Two couples go to a Haunted House Amusement where the two girls are taken by a Demon that has been risen from hell and his henchman. The boys break in and try to rescue them but are caught in the attempt. A Jesuit Priest sent by the church to investigate finds himself in the middle and battles the Demon to the Death, as Vampires and Zombie robed creatures wonder the Haunted Amusement all the while.