 French journalist Pierre Dalbert arrives in Hong Kong and, by accident, he is carrying a microfilm that was destined to local gang lord, Marech. Pierre is helped by an English journalist, Joan Kent, and falls in love with a night-club dancer, Colette. Colette is actually working for Marech, but betrays the gang for love - at the ultimate cost to her. The HK Police will intervene just in time to prevent Pierre from further losses.