Cheung Sung-bong is a highly respected cop with a long history of success in dangerous cases. However, his past soon comes back to haunt him when a former protégé resurfaces, seeking revenge.

The story tells the story of a collusion between Hong Kong police and criminals in 1973, under the instigation of the British, they embezzled huge profits and poisoned the citizens. The Governor of Hong Kong established the Independent Commission Against Corruption (ICAC).

Veteran detective Cham works with rookie cop Will to hunt down the city's serial killer. The investigation leads them to a lair littered with dismembered female limbs, and an ex-con who killed Cham's wife and child years ago...

A retired British Chinese soldier, a young South Asian man, an encounter at Chungking Mansions. Coincidentally, they both offended the same gang boss. What has given them a new lease of life and how do they rediscover themselves through each other's company.

A young man is accused of killing the daughter of Hong Kong’s richest tycoon after a drunken tryst. His poor shop owner grandmother insists he is innocent and seeks legal aid.

The master trainer's business has developed into a conglomerate and is being developed in a community center in an impoverished area. The community center is ostensibly a non-profit volunteer organization, but in reality, it uses the elderly and infirm to help the organization to engage in criminal activities and make huge profits. A group of young volunteers from the center gather secretly in the basement every night, and the master trainer brainwashes them with the idea of hating the rich and making the world a better place by assassinating the rich and committing drug crimes for the organization, so that they can regain the goal of their lives and help the organization loyally.