In the far western mountains of the Han Empire in ancient China, an aging dragon and a young orphan are held captive by a cruel master. Nameless and alone, the orphan is without hope, until, in a moment of startling courage, she comes to the aid of the dragon. With this heroic act, the orphan discovers her destiny as Dragon Keeper. Now, she and the dragon must go on a dangerous journey across China to protect a mysterious stone that is vital to the dragon's legacy.