Min is an assassin. His adopted son Eagle and his son KK kill another assassin, Michael, because he broke the rule of the assassin group. This breeds contempt in Panther, Michael's brother. He tries every means to identify Eagle and wants to kill him. When all come to failure, he frames Eagle to have broken the group's rule.

Sky is the king of the underground car racing circuit. After winning a hard-fought race, Sky is set up by his archrival Tang Fung.

Khmer Rouge terrorist Kieron Chow and his unit arrive in Hong Kong for their latest mission. Todd, Chow's son and fiercely loyal right-hand man, sustains a serious head wound. Now a total amnesiac, Todd wakes from a coma to find he's been given a new life, one that may be the death of him. With the help of psychiatrist Shirley Kwan, anti-terrorist officer Mark Chan tries to convince Todd that he is actually an undercover cop sent to infiltrate Chow's group. As fragments of his shattered memory return, Todd is forced to choose between his dark past and this one shot at redemption

Following his defeat by Master Ip, Cheung Tin Chi tries to make a life with his young son in Hong Kong, waiting tables at a bar that caters to expats. But it's not long before the mix of foreigners, money, and triad leaders draw him once again to the fight.

Liu Yue Ping reports to the ICAC about a rich 2G Cao Yuen Yuen who bribed officers of the Hong Kong Correctional Services (HKCS) from inside the prison. William Luk decides to infiltrate the prison as an inmate to conduct his investigation, while his partner Ching Tak Ming and Chief Inspector Lau Po-keung back him up from the outside.