Terrance Lau Chun-Him

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

In 1994, a tycoon's kidnapping shook Hong Kong, threatening its financial standing. Police pursued personal gain while OCID Superintendent Li Wenbin risked everything to navigate conflicting interests and expose the truth.

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.