The orphan girl Dorothy is caught up in a cyclone that whisks her, along with her entire farmhouse, off to the land of Oz. Her house plonks right on top of the Wicked Witch of the East, killing the witch.
(You'd think it would be obvious that having a house land on you would kill you, but not everything follows logic in Oz.)
Dorothy begins a long journey to the Emerald City to find the Wizard of Oz, who is the only person who can help her get home. Along the way she befriends the Scarecrow, Tin Woodman, and Cowardly Lion and together they face wolves, crows, bees, Winkie soldiers and, of course, flying Winged Monkeys.