This film is set in 1887 and starts in the Forbidden City, China. The guardian of the Imperial Seal and his daughter are viciously attacked during the theft of the Seal. The guardian is killed and the daughter Chon Lin (Fann Wong) is determined to avenge his death. She travels to England to pursue the killer, Lord Rathbone (Aidan Gillen), who is tenth in line to the throne of England. Rathbone has plotted with the Emperor’s brother, Wu Chan (Donnie Yen), to kill the nine members of the Royal family who are in line before him in exchange for the Seal which will give power to Wu Chan.

Meanwhile Chon Lin’s brother Chon Wang (Jackie Chan), who is the sheriff of Nevada, is saddened by the news of the death of his father. He heads to New York to find his old friend Roy O’Bannon (Owen Wilson) and to collect his share of the Emperor’s gold. He discovers that Roy has squandered all of it and is working as a waiter/gigolo. He persuades Wang that it’s okay to earn some money by having sex with women. After a hasty getaway one night, the pair stowaway to England to retrieve the Seal. They arrive in London and set out to find Lord Rathbone and the Seal. After many adventures, mayhem and Kung Fu, Lin, Wang and Roy try to prevent Wu Chan from killing the Royal family during a fireworks presentation. The trio then have to tackle Lord Rathbone.  (Source: YMA Movie Review)