Cheung framed Chan For. Chan orders his wife not to tell this to their children, Ah Lan and Hung. His wife passes away. On her deathbed, she asked a neighbour, To Chung-man, to take care of her children. Claiming to be a good friend of their father, Chan For moves in to the bed next to Ah Lan to take care of his children. Hung likes this uncle because he always treats him generously. But Ah Lan finds "Uncle For" weird and enthusiastic. Ah Lan is forced to pay her mother's debt. Hung is suffering from acute appendicitis. To solve Ah Lan's financial problem, Chung-man returns to his rich family and accept an arranged marriage. Ah Lan decides to sell herself to the construction site foreman for one night. Chan For wants to stop his daughter from making this deal, so he agrees to work for Cheung again. The next day he carries out a robbery and is caught. Ah Lan and Chung-man visit him in jail, and hold their wedding ceremony in front of him. He looks forward to the days when he returns.

Reporter Yu Mong-yuen is recovering from a leg injury in his fiancee Man-wah's apartment. Bored, he looks out the rear window and observes the life of the neighbouring building. Among the tenants are a sugar-daddy and his mistress, a middle-aged man wants to marry a young girl, but she is in love with his son. Finally, she hatches a plot and makes the man agree to her marrying his son ; a sly fortune-teller ; a lively gym, a rich widow quarrels with the trainer of a gymnasium because his dog has bitten her cat ; and an opera school, a woman signs, leaning on the balcony, and a man tries to strangle her. In fact they are rehearsing an opera…… One evening, Wah is on the night shift, and Yuen watches the opera troupe rehearse to the end. Under the influence of drugs, Yu mistakenly believes that a divorced man has murdered a taxi dancer. He alerts the police, but the whole thing is nothing more than a misunderstanding.

A Taoist priest herds his jiangshi charges across the country, but they are not all what they seem.

The Diamond Gang commits a robbery. The leader Chiu Yee-kong wants to keep the booty and this arouses the suspicion of gang member Tai-wai. The police does not have a clue and thus invite Wong Ngung, Heung Ad and Wu Ngar for help. Kong is in accomplice with his third concubine. They order someone to steal the diamond and leave Wong's symbol. Wai turns his attention on Wong. Wong, Ad and Wu are not afraid of Wai and they throw him out. They sneak in Kong's apartment to investigate. Kong's second concubine is mad at Kong for neglecting her. She tells Wong the truth but gets killed. Kong's people surround Wong, Ad and Wu. Each of the three faces their enemy. Ad is tortured by Wai. Wong and Wu arrive in time and save her. One of Kong's people tells Wai the truth. Wai immediately attacks Kong. Wong, Ad, Wu and the police arrive at Kong's headquarter to arrest the gangsters. Wai is arrested but Kong has escaped. The diamonds are found. The inspector makes Wong, Ad and Wu as partners.