Three Red Wings, the flying ships of the Order of the Dragon Knights, fight a dragon in the sky. During the battle, the monster struck a line ship that crashed, with its passengers, in the heart of the desert, in the middle of the Veill. Among the survivors, the apprentices of the Order, a mother with her son, a young man with the mysterious past, and the second of the ship. They had to survive, cross these dry lands, exit the danger zone by escaping dissension, traitorism, slave traders... The dragon that haunts the desert is perhaps the least evil...