a HK cop (Mark Cheng) comes to New York City to try and patch things up with his estranged wife (Yvonne Yung Hung), only to find that the criminal (Patrick Lung Kong) that made his life hell in Hong Kong has also come to the States.
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.
The fallout resulting from a botched Triad gang smuggling job forces a young couple to separate - she becomes a kingpin’s unwilling moll and he travels to the Philippines to work as a contract killer. Six years later, the two are reunited in a chance encounter, but their rekindled emotions and people from their past lead them into extreme danger.
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.
A chief inspector in the anti-narcotics unit holds true to his beliefs as a police officer. He puts everything on the line to crack down on drugs and to bring drug traffickers to justice. How will our hero resolve this "bursting point" crisis?
