At the end of the Ming Dynasty, the emperor was incompetent. The Jinyiwei, who had defended the country and made many contributions, were used by treacherous people and became assassination tools, which frightened the world. Although Prince Qing (played by Sammo Hung) was exiled to the northern part of the country for many years after being sentenced to amputation for usurping the throne, he was still ambitious and secretly colluded with the eunuch Jia Jingzhong (played by Law Kar-ying) to try to make a comeback. Jia Jingzhong set off a bloody storm in China, and those who were unwilling to follow him would be killed without mercy. Jinyiwei commander Shi Qinglong (played by Donnie Yen) was hunted down for discovering Jia Jingzhong's conspiracy during the execution of the mission. After being seriously injured, he committed himself to the Justice Escort Agency to protect the jade seal. In the vast desert, Qinglong, with the help of Qiao Hua (Vicki Zhao), the daughter of the escort leader, and Judge of the Desert (Wu Zun), the leader of the Eagle Gang, prepares to stop the conspiracy between Prince Qing and Jia Jingzhong. At this time, Tuotuo (Xu Zishan), the adopted daughter of Prince Qing, who possesses peerless martial arts, also rushes to Yanmen Pass with the mission of hunting down Qinglong...