Vengeful spirits of Japanese soldiers from World War II haunt a new high-rise office building in Hong Kong.

Po-Chih Leong's debut film was a trendsetter in Hong Kong cinema. Shot from the shoulder, the fast-moving world of cops, informers, drug dealers and other crooks are evoked in a very lively and realistic way. The action all takes place in carefully selected locations, among them the walled city of Kowloon and Yuen Long. The film looks like a documentary and evokes the kind of excitement usually seen in news programmes. The story focuses on the battle between two gangs and starts in Amsterdam, where one of the gang leaders is murdered.

Chan Wai Man is Ah Keung, a thug and assassin who tries to go straight after his job becomes to dangerous. A series of events plunges him back into his former lifestyle and he find himself up against his old buddy who has now become a cop. Fights choreographed by Chan Wai Man.

Chen Yuen, a professional boxer, goes into hiding when his career takes a nose dive. His loneliness has bred impotency and, ultimately insanity. Now he stalks the city streets, attacking and slaughtering unsuspecting females.