The Azure Fairy of the Magical Land

Once, the Scarecrow learns that a wonderful talisman is hidden in the Emerald City, which can be used to subjugate the entire Magical Land. Hearing about this, the treacherous ruler of the Moon Valley, Prince Centurro, immediately decides to seize the talisman and outfits his army to march on the Emerald City.
Who will help the Scarecrow and his friends save their homeland from the invaders? Perhaps it will be Jerry, a boy from Kansas, who found an ancient map of the Magical Land in his grandfather's chest?..