Na sequência do filme de ação de Hong Kong 2012, os rivais chefes de polícia M.B. Lee e Sean Lau devem trabalhar juntos para salvar a esposa e filha de Sean que foram sequestradas.
Tensions flare between PTU officers and the Complaints Against Police Officers unit when a security camera captures a triad member being brutalized by PTU officers.
New Year's Eve of 1997, Hong Kong is almost in hand to China and the service routine is shaken by a number of events that threaten to get out of hand: a cop accidentally kills an old woman kidnapped by a thug during a tense action and is arrested facing general disbelief. A cadet committing the same offense is acquitted and instead celebrated as a hero by the citizens, but flooding of guilt. A senior police officer on the other hand is going to be left by his wife in vain that claims more attention and time he has never failed to give her. The three destinies cross when the third of them takes hostage during the New Year, the new man in the woman.
Kin (Anthony Wong) is a hard-working insurance salesman with a very pregnant wife. When his wife starts haemorrhaging, he calls a taxi, but it leaves when someone else offers more money. After his wife dies, Kin vows to get revenge on all taxi drivers by taking them out one at a time.
Rookie PTU officers Fan and Fat manages to find themselves in a shootout with fugitives but ends up in a favorable light afterwards, earning promotions to CID officers.
In April 1985, two expatriate students Kenneth McBride, age 17, and 18 year-old Nicola Myers were beaten, raped, and murdered by a teenage gang. Based on the true story of Hong Kong's Braemar Hill murders.
Two up-and-coming young fighters struggle to reach the top of their sport and survive the difficulties of life outside the ring. An inspirational drama with exciting boxing footage.