It's traditional on Halloween for little costumed kids to knock on every door squealing "Trick or Treat", whereupon the homeowner is expected to hand over a treat. But when Huey, Dewey and Louie arrive at the door of their Uncle Donald, he prankishly pulls a "trick" on them, forcing them to leave empty-handed. All this is witnessed by fun-loving Witch Hazel, who takes a liking to the boys and decides to teach Donald a lesson with the help of her doglike magic broom Beezlebubb and a trio of singing ghosts. Before long, Donald finds himself unable to stop dancing--while his feet continually change color depending on the song. This delightful cartoon is distinguished by a catchy theme tune and some fascinating title designs--to say nothing of the presence of the irrepressible Witch Hazel.