一对孪生兄弟王名成(刘青云(yún ))与(🐌)王利(lì )就(周星驰)自小(🔱)失散。名成(🎺)与母相依为命,利就则为老粗(cū )鲁辉(梁(🎾)家仁)收养(🎲),改名(🌗)为鲁细。成是电(diàn )影(yǐng )圈的新(xīn )进导演,为人精明(👁)有绰头,敢作敢(gǎn )为(🏐);细则(🕌)为通天经纪(jì ),性(😚)格爽朗具正义感(gǎn )。机(🥀)缘(yuán )巧(🤯)合下(🐖)两人相遇并共住(zhù )一屋,但却(què )不知大家的(de )真正身(❔)份。细(xì )钟情于童(tóng )年(🥔)好(hǎo )(💻)友(yǒu )方(🙂)嘉楠(陈秀雯),嘉楠是名成的下属,对名成(🍄)心仪(yí )已久,兄(🔔)弟两人更(⛳)闹(nào )出(chū )一(yī )段(⛳)纠(🏯)缠不(🎋)清(qīng )(🥕)的(🕐)三(🐀)角恋爱。鲁辉认识了(🗳)嘉(jiā )(🤘)楠的阿姨卓龄,她为(wéi )人高贵具教养,与辉(huī )分(fèn )属两个(🐨)世界(jiè ),但龄(🌪)欣赏他为人老实(shí )忠诚(🔈),最后与他展(zhǎn )开了(le )一段浪(làng )漫恋情。兄弟两人最(👵)后(hòu )终(zhōng )于相认(rèn )(🍽),但因性(xìng )格各异(yì )而心存隔膜。后名(💣)成(🔥)与(yǔ )友人合伙(huǒ )营(🚽)商,却(què )被骗而惹上(shàng )官非,患(🔪)难中细(xì )明白到(dào )兄弟(🤼)情(❓)之(zhī )珍贵,与众人(🚤)共施计策,营(💁)救胞兄。