Shanghai Knights (2003) - Synopsis

"When a Chinese rebel murders Chon's estranged father and escapes to England, Chon and Roy make their way to London with revenge on their minds. Chon's sister, Lin, has the same idea, and uncovers a worldwide conspiracy to murder the royal family but almost no one will believe her. With the help of a kindly Scotland Yard Inspector and a 10-year-old street urchin, the acrobatic Chon (Chan) gives Victorian Britain a kick in the pants as he attempts to avenge his father's death and keep the romance-minded Roy away from his sister. Hilarious escapes and hair-raising adventure await our heroes, as they do for Big Ben, Madame Toussaud's, and the Convent Gardens what they did for the Old West."