East and West team up to take on bad guys in the British Empire in this sequel to the action comedy hit Shanghai Noon. Chon Wang (Jackie Chan), once an Imperial Guard in China, is now the Sheriff of Carson City, NV, while his onetime cohort, former train robber Roy O'Bannon (Owen Wilson), scrapes together a living writing dime novels based on his adventures and waiting tables in New York City. However, when Wang learns that his father was killed by bandits who broke into the Emperor's palace and stole the Imperial Seal, he's determined to bring the criminals to justice. Wang's sister Lin (Fann Wong) has learned that the killers have escaped to London, so Wang travels to England to meet her, with O'Bannon in tow. As Wang and Lin -- whose martial arts skills rival those of her brother -- look for the culprits, they discover that Lord Rathbone (Aidan Gillen), who is looking to shorten his path of succession to the British throne, is in cahoots with Wu Chan (Donnie Yen), the bastard son of the Chinese Emperor's father, who needs the Imperial Seal as part of his plan to win control of the nation. As Wang and Lin try to get to the bottom of Chan's schemes, O'Bannon finds himself infatuated with his pal's sister. While set in Victorian London, Shanghai Knights was actually filmed on locations in the former Czech Republic, which more closely resembled turn-of-the-century England.
by Mark Deming synopsis