The Wishing Horse of Oz

Magic wishing emeralds mysteriously arrive in the little kingdom of Skampavia. King Skamperoo immediately confiscates them and wishes to become the Emperor of Oz, with his magic horse Chalk as his advisor. All the residents of Oz are enchanted to forget Ozma and their own rulers, except for Dorothy and Pigasus the flying pig. Can Dorothy and Pigasus break the enchantment and rescue Princess Ozma? ...