The rich merchant nest master made a will on his deathbed, passing on all the inheritance to his daughter Fei Fei (Wu Junru) in France, and the will was kept by the second master of the nest. Master Nest's unscrupulous Ziqiu tried every means to amend the will, while the second master's unworthy son was stupid also wanted to change the will privately. One night, the lucky star (Zhou Xingchi is acted the role of) is caught by the big silly when stealing to the nest house, sees he steals skillfully, the big silly orders lucky star to help him steal the will. And A Qiu also inadvertently found that the garbage Phoenix (Wu Junru) who specializes in picking up garbage in the junkyard looks exactly the same as his sister Fei Fei, so she ordered A Feng to pretend to be her sister to deceive the estate in charge of the second master.On the night when the second master went to meet the fake Feifei (Ah Feng) who came back from France, the lucky star dived into the nest mansion to steal the will. Unexpectedly, the matter was exposed and was caught by the second master. In a hurry, the lucky star falsely claimed that he was Fei Fei's boyfriend many years ago, trying to muddle through. And A Feng, who didn't know it, was afraid of showing off and admitted that Lucky Star was her boyfriend. So a hilarious battle for inheritance began.

富商巢老爺臨終立下遺囑，將所有遺產都傳給遠在法國的女兒飛飛（吳君如 飾），遺囑由巢二爺保管。巢老爺的不肖子鞦韆方百計想修改遺囑，而二爺的不肖子大傻亦想取得遺囑私自修改。一晚，幸運星（周星馳 飾）到巢家偷竊時被大傻抓住，見他偷竊有一手，大傻命令幸運星幫助自己偷遺囑。而阿秋 亦無意中發現在垃圾場專門撿垃圾的垃圾鳳（吳君如 飾）樣貌竟然和他妹妹飛飛一模一樣，於是命令阿鳳假扮其妹騙取二爺掌管的遺產。就在二爺去迎接從法國回來的假飛飛（阿鳳）的晚上，幸運星按大傻吩咐潛到了巢家大宅去偷遺囑。不料事情敗露，被二爺抓個正著。情急之下，幸運星謊稱自己是飛飛多年前的男友，企圖矇混過關。而不知就裡的阿鳳怕露出馬腳，也承認了幸運星是她的男友。於是一場笑料百出的遺產爭奪戰開始了。