Fortune Oyama is just a normal teenager. He goes to school, makes good grades and spends time with his family and friends. Everything changes on the day of his 18th birthday, when a single left wing miraculously sprouts out of his back. Fortune learns he is part of a prophecy to either save or destroy the world. Fortune's Wing takes him and his friends on a journey to a mysterious island, where he must find the right wing and complete the set. However, there are other people who want the wings for themselves, and they're willing to do anything to get them. Fortune must battle monsters and powerful sorcerers in order to fulfill his destiny. He who possesses the wings shall control the fate of the world.