The Lost Castle (The Chronicles of Krangor)

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.