L. Frank Baum's the Wonderful Wizard of Oz

Carried by a tornado to the Land of Oz, Dorothy Gale unwittingly frees the Munchkins from the cruel Witch of the East. She is given the witch's Silver Shoes and is told by the Witch of the North that her best hope for returning home is to seek out the Great Oz. Along the way she rescues a forlorn Scarecrow and a brokenhearted Tin Woodman, and is joined by a deeply insecure Lion. This unlikely band travels a perilous road to the Emerald City, where each of them is charged with first doing a favor for the Great Oz before he will help them. They are sent to kill the Wicked Witch of the West, Oz's last remaining enemy. But the Great Oz is a sham, and though these four unusual heroes have risked their lives carrying out his request, he is powerless to keep his promises.