Trained in clandestine combat from childhood, the Jinyiwei were masters of the 14 Blades; eight being for torture, five for killing, and the last blade reserved for suicide when a mission failed. An elite force of secret agents with a license to kill, the Jinyiwei devoted their lives and lethal prowess to the service of the Emperor alone. When the Imperial Court is taken over by evil eunuch Jia (Law Kar Ying), the best of the Jinyiwei, Qinglong (Donnie Yen) is assigned to steal a list identifying those still loyal to the Emperor. However unbeknownst to Qinglong, the Jinyiwei have fallen under the control of Jia, and during the mission Qinglong is betrayed and barely escapes with his life. Now as the most wanted man in the land, Qinglong must seek out and rally the loyalists to rise against Jia and restore the Emperor to power. In his way are the deadliest assassins in the land, his former brethren, the Jinyiwei.

In the prequel of Infernal Affairs. Chan Wing Yan has been expelled from police academy in cause of his relatives to the triad. Now SP Wong give him a chance to undercover the triad family controlled by his half brother Hau. Besides of Ming. He has been ordered to killed Hau father and infiltrated the police department. The story get complicated when Wong's related to Hau father's dead. The avenge is begin when Mary. Sam's wife is the hit order. Now everything is complicated and related Written by PDD

3 Chapters of stories reveal abandoned paternal love, friendship and love between generations.