该片是《无间道》系列电影的第二部，讲述了黑帮头目韩琛及督察黄志诚于90年代的恩怨情仇，两人分别依靠卧底刘建明及陈永仁的帮助，于黑白两道扶摇直上，并合力对付龙头家族话事人倪永孝的故事。This movie is the second in the ‘Infernal Affairs’ series. It tells the story of mob boss Han Chen and Inspector Wong Chi-sing’s grudges and conflicts in the ’90s. Both rise to power in the underworld and police force with the help of undercover agents Liu Jianming and Chen Yongren, and together they take on the head of the Lung family, Ni Yongxiao.
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