Infernal Affairs 2

Chan Wing Yan has been expelled from the police academy cause of his relatives in the triad. Now SP Wong gives him a chance to undercover the triad family controlled by his half-brother Hau. Besides Ming, who has been ordered to kill Hau's father and infiltrate the police department. The story gets complicated when Wong is related to Hau's father's death. The avenge begins when Mary. Sam's wife is the hit order. Now everything is complicated and related.
(Source: IMDb)