Samson Tsang Chung-Yuen

In 1980s Hong Kong, troubled youth Chan Lok-kwun, a mainland refugee, struggles to survive in the Kowloon Walled City by joining underground fights. Betrayed by crime boss Mr. Big while trying to buy a fake ID, he steals drugs from him and seeks refuge in the Walled City, where he encounters Cyclone, a compassionate yet authoritative crime lord.

In 1970s Hong Kong, the Independent Commission Against Corruption (ICAC) was formed to bring down the corruption syndicate led by British government officials. One of its top investigators is Senior Investigator Lau Kai-Yuen, who brought down countless corrupted officials. Just as he thought stability and prosperity are within reach, a new era of greed and riches takes him into a new battlefield of corruption.

Ho Sau, an undercover agent, has been working with Yau, a drug lord, for years, but his job and family are in trouble.

Working in the morgue, a hardworking forensics expert and his assistant are suddenly accosted by masked intruders who demand access to a body involved in a recent crime.

Hong Kong Customs and Excise Department officers Chow Ching Lai and Cheung Wan Nam share a close mentor-student relationship. On a case involving seized smuggled arms, Chow is sent to take part in a joint operation with Interpol to capture a reclusive arms dealer. However, Cheung makes a drastic decision that further complicates the case.

A washed-up action choreographer, struggling to find his way in a changing industry, risks everything to stage an epic comeback, and attempts to repair the relationship with his estranged daughter before it's too late.

The film centers around a Malaysian pharmaceutical company using a new virus to generate an epidemic. A secret organization, known as "The Leaker", discloses this information. After the suicide of the pharmaceutical company's son and a local reporter, the wife of the pharmaceutical company's owner leaves for Hong Kong. A Malaysian police chief , Hong Kong police officer, and journalist work together to locate her whereabouts.