Chow Ting-fat (
Chow Yun-fat) dreams of becoming wealthy and marrying beautiful ladies at once in Hong Kong. One night, when his car broke down in heavy rainfall, he meets two women named Joey (
Joey Wong), a boutique owner, and Sally (
Sally Yeh), a stewardess. He ends up marrying both women, Joey in America and Sally in Paris, with both his wives not knowing of the bigamy. Chow enlists his best friend and business partner, Chi-hung (
Waise Lee), who is aware of Chow's bigamy, to assist him during emergency times including run-ins, close calls, and scheduling conflicts when spending time with both women. Unfortunately, Chow one day had an accidental run-in with police Inspector Cheng (
Kent Cheng), which resulted him being sent to the hospital and both wives looking for him there. Inspector Cheng is left suspicious. Soon, Joey meets Sally after she buys a dress at the former's boutique and later become friends. Sally accompanies Chow to Joey's apartment for her birthday and, to avoid suspicion, Chi-hung poses as Joey's "husband" and told Joey the visiting Inspector Cheng is a psychopath in order to prevent her and Sally from being further questioned about the possibility of Chow being married to both women. But Chi-hung later suffers a breakdown, leading his girlfriend Ka-lai (
Carrie Ng) suspecting something is amiss. During Chow's and his wives' first year wedding anniversary, Sally and Joey both happened to be at a photo shop getting their wedding pictures reframed, and subsequently discovering they are both married to the same man. Angry and desperate, Sally, Joey, and Ka-lai plan a vacation for Chow and Chi-hung at a hotel. There, Chi-hung is confronted by Ka-lai for his role in keeping Chow's bigamy a secret, and Chow, still oblivious to his secret being exposed, is punished by his wives with slaps and being beaten by paid thugs. Finally, Sally and Joey reveal to Chow his secret is out and leaves him tied to his hotel bed and turns on the fire sprinkler system. After Chow's failed attempt to woo them back, Sally and Joey run into each other at the airport, each thinking about leaving Hong Kong. They discuss who should stay married to and be with Chow. But, after a run-in with Chow there and seeing his desperate attempts to win them back, Sally and Joey both decide to stay. All three inadvertently run into each other at the Casablanca restaurant, where outside they stumbled upon Inspector Cheng and his police force engage in a gun fight with two drug criminals. Chow is grazed by a bullet in the process, prompting his wives to beat up the two crooks, giving the police a leeway to arrest them. After the mayhem, Chow apologizes to Sally and Joey for his bigamy and acknowledges their marriage arrangement will not work. They all then part ways. Later on, though, Chow is seen in Middle Eastern attire and spending time happily with Sally and Joey, also in Middle Eastern attires, leading to the belief they all either converted to a Middle Eastern religion or moved to a Middle Eastern country where polygamy is legal. ==Cast==