Ainu (Lily Ho) is an aristocratic maiden, abducted and sold to the Four Seasons brothel, where she becomes its most popular attraction – for the patrons and Madam Chun, the deadly taskmaster of the establishment. Learning martial arts from the sultry Chun, Ainu sets about exacting revenge on the people who have wronged her. The police investigating the case slowly begin to unravel the layers of intrigue surroundings the deaths.