A baby-sitter is called to watch two kids on Halloween. They meet a real witch and at their request, turns them into Frankenstein (baby-sitter, a guy), ghost (little girl) and Wolfman (little boy). I believe the witch accompanies the three to a Halloween party and turns some of the guests into their favorite creature. I also remember that other members of the town get upset and I think they try to lynch or capture the creatures. The kids spend the night as real creatures but decide that they want to go back to their human forms by the end of the show.