Chen Chun (Max Mok) and San (Roy Cheung) are two low-level mainland gangsters who open their own gambling outfit. When Chen Chun winds up killing the owner of a rival parlor, he flees to Hong Kong where he soon falls in with a heroin-addicted hooker named Fang (Lee Suet Man). They inevitably fall in love, but soon their bliss is shattered with the news that Chen's gambling venture has been taken over by a notorious gangster called Bolo Guy (Jimmy Lung Fong) and his mainland girlfriend Melia (Jacqueline Ng) who has been killed. Chen goes back over the border looking to set things right.

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