石金水(周星驰 饰)与吴带娣(吴君如 饰)同在乡下长大,二人青梅竹马,也私定终生了。由于阿娣的父亲反对,两人不得不私奔到市区生活。刚开始金水的求职路十分不顺,处处碰壁,夫妻俩过着拮据的生活。得到工作后的金水勤奋工作得到了上司Nancy赏识提携。二人更渐生情愫,导致了金水与妻子阿娣感情破裂,阿娣伤心离去。两年后,金水浪子回头,决定找回昔日的爱妻。
Based on the novel by Karel Capek, the prominent Czech writer of the early 20th century who coined the word robot for his play R.U.R., the story revolves around a discovery of Krakatit - a powerful explosive - by Prokop, an experimental scientist who, following an accidental explosion in his lab, slips in and out of delirium. When he realises that, in a delirious period, he has given the formula for making Krakatit to one of his colleagues, he tries to find the man, who does not realize how dangerous a thing Krakatit is. In the process, he nearly gives his discovery away again to foreign interests, a group of anarchists, and even greater forces of darkness...