Rejected by Law (Sheung-kwun Kwan-wai), ruffian Koo (Wong Yee) exacts his vengeance by making Law lose her job. When her father is injured at work, her brother Fai and boyfriend Tse resort to obtaining a loan. Koo even kills their creditor and frames the murder on Tse. Law and her brother sow discord between Koo and his mistress, eventually exposing their crime and leading to Tse's acquittal. While retaining her feminie elegance and charm in subtle details, Law resourcefully eliminates all the threats and dangers. Unlike other conventional detective dramas of Cantonese films, this film is filled with a sense of community and grassroot sensibility. Sheung-kwun Kwan-wai impressively demonstrates a great flexibility and versatility in her characterisation and performance of this female detective role.
Fitness student
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.
Chun-Kit, as young boy
Ah Hing is made pregnant by her master Fan Chun-kit. Fan soon leaves for his studies overseas while Ah Hing suffers gross prosecution and is reduced to becoming a prostitute. In a momentary slip of a struggle, Ah Hing commits manslaughter. Now a qualified lawyer, Fan acquits Ah Hing of the charge, and intends to marry her to redeem his negligence in the past. Ah Hing, however, is determined to pursue an independent life.
Ko Kwok-ying
Ko Suk-ying is saddened over her arranged marriage as manipulated by her father Hak-ming. Ko Kok-sun's Cousin Chow Wai's spends the Mid-Autumn Festival before her marriage with the Kos. She has been in love with Sun. Sun finds out about her love for him when she is about to be married off, he is too weak to oppose to Wai's betrothal to another man. Sun's son, Hoi-sun, falls ill. Fearing the displeasure of his elders, Sun dares not consult a western doctor.
Meanwhile, another dispute arises among members of the family over the ancestral land. When accused of being incompetent in his management, Sun takes the blame silently. Wai dies of grief while Hoi-sun becomes a victim of mistreatment. Sun is devastated at this double blow.
Hak-ming instructs Sun to arrange for Ying's wedding. Knowing the kind of man Ying's fiancee is, Sun is reluctant. Not wanting to follow in Wai's footsteps, Ying fights for her own rights, and backed by an enlightened Sun, she leaves for a new start.
