A romantic Chinese New Year comedy about the three Shang brothers. Eldest brother Shang Moon is a philandering businessman who treats his hideous yet hard-working wife like dirt. Middle brother Shang Foon is a disc jockey/playboy who tries to score with as many girls as possible. Youngest brother Shang So is an obviously gay dance instructor. Moon soon gets the tables turned on him as his wife leaves to become a glamorous karaoke hostess, and Foon gets into a bizarre relationship with a fan so obsessed with movies that she constantly acts out characters on dates, until he suddenly becomes temporarily mentally ill. And So is continually at odds with obvious butch lesbian family cousin. Hilarity ensues. 常家三兄弟各有个性，老大常满（黄百鸣）娶了贤惠善理家但不善自我打扮的程大嫂（吴君如），红杏出墙将情妇迎进门：老二常骚（张国荣）扭捏自恋但有插花的才情，不想碰到了一善按摩的男人婆；老三常欢（周星驰）自命风流，在历经各种事情后，终于找到了真爱。三兄弟在父母生日的晚会上终于迎来了各自的喜事。...
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