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.
Loi Bo Watch Company, Hong Kong's esteemed watch boutique, conceals a thrilling secret—it serves as the epicentre for stolen timepieces. Under the icy command of Uncle, a fearless crew assembles: an audacious thief, explosive specialist, lock-picking prodigy, and watch connoisseur. Their target? Tokyo, where they plan to heist three ultra-luxury watches.
Ho Sau, an undercover agent, has been working with Yau, a drug lord, for years, but his job and family are in trouble.