The Great Thief "Changeable Fox" consists of Ding Song, his apprentices Qian Qian, Perseverance, Fang Zheng, and his daughter Ding Dingdong. They are commissioned to steal the Yongle Classic, which hides the secrets of the Empress Dowager, during which they rescue the trapped Qin Jian and invite him to join. Everyone learned that the four emperors wanted to use this to usurp the throne, so they fought with him in a battle of wits and power.