A vicious series of events leaves mainlander May a widow, and having to give up her infant son.
Six years pass. While briefly working in a hotel, she agrees to be illegally moved to Macau, among a group of girls headed for prostitution. The girls are caged and sprayed with water until they agree to this.
May is befriended by loudmouthed Chau, and we follow them being taken to a variety of customers in seedy hotels.
May plots to get to HK and find her son. When the amorous Mr Sandos becomes sweet on May, she sees a chance....