13/06/1963
London special agents Wong Tak-fat and Fong Lung have arrived in Hong Kong to investigate a murder in connection with a drugs trafficking ring. Fong attends a ball hosted by his girlfriend's rich father Sze Kam-wing where evidences lead him to the Black Eye Bar. Wong befriends the recently widowed bar owner Lee Mei-chen and soon becomes enlisted as member of the ring and the ring leader's trusted aide. Falling in love with Lee, Wong is told that her husband was killed for leaving the organisation. Wong is however unable to establish contact with Fong with all outside communication cut off. Anxious to hear from Wong, Fong investigates discreetly at the bar. Mistaken for a cop, Fong is captured but helped to flee by Lee. Alarmed by Fong's escape and the leak of Wong's identity, ring members are just about to execute Wong and Lee just when the police raid the drugs den and arrest the ringleader—Sze.

Law Yim-Hing
as

Yue Chung
as

Leung Sing Poh
as

Kong Yat-fan
as

Lam Kau
as

Lok Gung
as

Gwan Jing-Leung
as

Cheng Chung-Sing
as

Lam Sing-Fan
as Detective A

Cindy Lau Siu-Guen
as

Raymond Chang
as Detective C

Kwok Siu-Hung
as Si Yuk-Fong

Jeng Chung-Yee
as

Tung Choi-Bo
as

Yu Li-Hua
as

Bu Ren
as Detective B
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