The Head of Southern Stone Village, Lee Ba-hung bullies others with his power. Yet he has no knowledge that his niece Lee Chun-hong is actually the Black Heroine who confronts him. It turns out that Chun-hong's father is fearful that Ba-hung would bully the mother and daughter of Chun-hong, hence he has disguised Chun-hong with woman attires. Chun-hong's identity is unveiled when she devotes herself to helping the refugees of a disaster by distributing food and emergency supplies. Ba-hung would like to murder Chung-hong by hanging, yet it ends in him being killed by his followers.

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.

Chan Siu-hung is forced to become a prostitute, with the police following hot on her heels. Ching Chi-ko comes to her defence by claiming to be her husband. Chan is put up at Ching's roof hut named the 'Seventh Heaven' and the two gradually fall in love. Soon the war breaks out. Ching is drafted to do hard labour by the Japanese army. When the war is over, the crippled Ching returns and lies to Chan that he is already a married man, hoping to persvade Chan to marry someone else. Nonetheless, Chan's devotion overwhelms Ching.

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.

Guerrilla member Ting Siu-yuen works as a playwright and Lee, the leader of an opera troupe. They conceal their identities in the troupe in order to gather military intelligence. Yuen gradually falls in love with the lead actress Mui Law-heung. Ting is unsettled to learn that County Chief Fong covets Mui. He sneaks into Fong's residence and is astounded by the sight of his old lover Pak Kuen, now Fong's wife. Fong colludes with the military chief in conducting vicious schemes. With Kuen's help, Yuen is able to get the intelligence. But as Heung is not an insider, she reports to the Governor about the illicit relationship between Yuen and Kuen. Kuen backs Yuen to eliminate the conspirators and bring about the union of Yuen and Heung.