Hong Kong Customs and Excise Department officers Chow Ching-lai (Nicholas Tse) and Cheung Wan-nam (Jacky Cheung) 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 complicates the case even further.
| Directing | Herman Yau | Director |
| Crew | Nicholas Tse | Fight Choreographer |
| Writing | Erica Li | Writer |
| Writing | Eric Lee | Writer |
| Crew | Alan Ng Wing-Lun | Fight Choreographer |
| Camera | Joe Chan Kwong-Hung | Director of Photography |
| Crew | Derek Siu Hing-Wa | Cinematography |
| Editing | Wai Chiu Chung | Editor |
| Production | Jason Siu Kim-Chau | Producer |
| Sound | Mak Chun-hung | Music Director |
| Production | Fung Chi-Wai | Production Supervisor |
| Sound | Ip Siu-Kei | Sound Designer |
| Crew | Albert Yeung | Presenter |