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.
Former cop-turned-bar owner Kwok and his underachieving half-brother befriends a drunken woman, they soon find themselves targeted by both her former lover, a high-powered attorney, and the gangster he employs. A suitcase full of tainted cash enters the picture as Kwok finds himself torn between the gangsters and his former colleagues.
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, Ching-lai is sent to take part in a joint operation with Interpol to capture a reclusive arms dealer. However, Wan-nam makes a drastic decision that further complicates the case.
Ho Sau, an undercover agent, has been working with Yau, a drug lord, for years, but his job and family are in trouble.