Cheng Chung-bo and his family become the target of attack and abduction orchestrated by a crime syndicate coveting the treasure map in his possession. His youngest son Fai is hauled to safety by the space station scientist and gains great power as the Moonlight Spaceman under his tutelage. Fai returns after six years with the mission to crack down on the ring. Flying Heroine Ma Chau-wan is sent as his backup by the understandably worried scientist. The spaceman approaches neighbour Ho Kei-ming's daughter Yuk-wah in order to probe into the father's dealings with the crime ring. Ma, meanwhile, charms her way into Detective Wong's investigation squad. Fai and the detective make a narrow escape from death but are dealt another setback, with Fai's mother and Yuk-wah abducted. (Continued in 'The Female King Kong')

The crime syndicate demands that Cheng Chung-bo lead the way to the treasure trove, holding his family hostage. Booby-trapped, Cheng Fai disengages the device and flees to join Flying Heroine Ma Chau-wan and Detective Wong. Meanwhile, the ingenious scientist Dr Ng is enlisted by the ringleader Ho Kei-ming to match wits and brawn with Fai and Ma. Ma slyly earns the trust of a bewitched Ng, claiming to be Fai's biggest foe. Ng ushers Ma into the headquarters where he meets his doom. With his patience running out, Ho grasps an apprehended Chung-bo on a treasure hunt while the pursuers are diverted from their course. Ma recognises her long-lost father from among the gangsters and brings him to his senses with words of absolution. The father pledges his alliance to the duo in crushing the gang and saving Chung-bo and wife.

Tang Wan-tung, the son of a Southeast Asian Sultan is a student in Hong Kong. Only Uncle Mui, his guardian, knows his identity. Tang is known as "student prince". He organises an embassy variety show. Tang invites Lai Tsi-king, who has a lovely voice, to perform in it, but it ruins her chance to study music abroad. Lai’s parents want her to marry Tung Fook-si, the son of a merchant. Lai asks Tang to act for her parents, like a prince courting her. Her parents are convinced, but Tung is not fooled. Tang smuggles Lai out to perform in the embassy. Lai's performance earns her a chance to study overseas, but her parents will not support her. Tang borrows money from his father, but is refused. He pawns his father’s ring to help Lai pay the tuition. Tung takes his father's ring and sells it. Tung's father alerts the police. The rings turn out to be a pair. The police think Tang stole the diamond ring, but Mui tells the truth. Tung is arrested and Tang and Lai have a happy ending.

Ting Cheuk-ting (Lee Hang), the accountant of a trading company, tries to borrow money from his employer, but in vain. The following day, the company finds that $30,000 has been stolen, and the missing money is recovered at Ting’s home. Ting’s daughter, Suk-wai (Connie Chan), takes the fall for her father. She admits to the theft and is given a one-year bind-over order, which infuriates Ting to the point of death. Suk-wai has to carry the burden of providing for her family, but constantly runs into walls due to her criminal record. She eventually disguises herself as a man to work as a typist at her father’s old trading company. The boss’s daughter, Mona Lui (Helena Law Lan), exposes her and calls the police upon discovering her secret. Suk-wai is left unable to defend herself.