In the 1880's, Chon Wang(Jackie Chan)'s father and keeper of the Imperial Seal has been murdered by Parliament and royal family member Rathbone(Aidan Gillen), (who steals the Imperial Seal) with Chon Wang's sister, Chon Lin(Fann Wong), witnessing the murder. Chon Lin follows Rathbone to London to kill him, while sending Chon a letter telling him of the murder. Chon then travels to New York for Roy O'Bannon. Together they travel to England and meet up with Chon Lin to kill Rathbone and get the Imperial Seal back.
