When Queen Tayesha threatens to conquer all seven kingdoms of Krangor and break the ancient bond between the saur and the land, a young noble named Adalon vows to stop her. He and his loyal friends Targesh and Simangee must find a safe haven, far from the queen's bloodthirsty soldiers. Beyond a river of fire, a lost castle beckons them. Mysteries and magical wonders await the three friends at the castle, but awakening ancient magic brings its own dangers.

While Adalon and his friends Targesh and Simangee gather supporters at the Lost Castle, the mad Queen Tayesha and her ruthless general continue to wage war on the Seven Kingdoms of Krangor. It is only when Simangee finds a legend in an ancient text that the rebels begin to have renwed hope. Do the Missing Kin of the saur really exist? Can the three friends find the winged saur and convince them to join their cause before the war is lost?