The continuing adventures of former Chinese Imperial guard Chon Wang and American bandit, Roy O'Bannon.

Chon Wang, a Chinese imperial guard, travels to the United States to save Princess Pei-Pei who has been kidnapped. Teaming up with train robber Roy O'Bannon, they face off against a Chinese traitor and his boss. Along the way, they encounter outlaws, tribes, and a rescue mission, ultimately becoming sheriffs to catch train robbers.

Chon Wang, a sheriff in the Wild West, receives news that his father has been murdered by a Chinese rebel in England. He teams up with his old partner Roy O'Bannon and travels to London to seek revenge. Along the way, they encounter street thugs, get involved in a conspiracy, and find themselves in a battle to reclaim the Imperial Seal of China. With martial arts skills and comedic antics, they navigate through a series of adventures to bring justice and honor to their family.