23/07/1967
The agile and cerebral fighter Kong Yin is invited to join the police SWAT team. Kong is soon sent on an undercover mission to investigate the gang operating at the Happiness Rubber Plant to coerce female workers into prostitution. An indignant Kong joins hands with fellow worker Chow Mei-ha and factory head Wong Chi-kong to expel Blackie Kei whose ruthless and blatant exploitation of the workers has been going unpunished. Facing the loss of a lucrative source of income, Blackie and his underworld bigwig boss Wu Tin-hung intercept the love letters exchanged between Wong and the wife of the general manager Ting Yuk-lan and use the correspondence to extort money from the adulterers. The fearless Chow dons a maid disguise and ingratiates herself with the gangster, followed by a police raid masterminded by Kong to crack down on the notorious gang.

Connie Chan Po-Chu
as Kong Yin

Tam Bing-Man
as Wong Chi-kong

Fong Sum
as Ting Yuk-lan

Lydia Shum Tin-Ha
as Chow Mei-ha

Yu Ming
as

Sek Kin
as Wu Tin-hung

Fung King Man
as Blackie Kei

Lok Kung
as Inspector Lai

Pak Ming
as Ho Tze-ming

Sze-Ma Wah-Lung
as To Hok

Chow Wai-Fong
as Chow Mei-Wan

Lau Kar-Leung
as
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