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 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.