Narcotics officer Shaolun (Tony Leung Ka Fai), in order to bring down the local drug kingpin King (Michael Wong), forces a female street thug with an equally sketchy past, Coco (Rosamund Kwan) to infiltrate King's organization and provide information. What no one expected was for both men to fall for Coco, and Coco for King.
| Actor | Role |
|---|---|
 Tony Leung Ka-faiInspector Leung | Inspector Leung |
 Rosamund Kwan Chi-LamCoco Xu | Coco Xu |
 Michael WongKing | King |
 Elizabeth Lee Mei-FungLeung's girlfriend | Leung's girlfriend |
 Kwan Hoi-SanNot listed | Not listed |
 Mannor Chan Man-NaNot listed | Not listed |
 Calvin Poon Yuen-LeungNot listed | Not listed |
 Lung FongNot listed | Not listed |
 Andy Lee Do-YueNot listed | Not listed |
| EEdward CorbettNot listed | Not listed |
 Kim Yip Kwong-KimNot listed | Not listed |
 Yip Hon-LeungNot listed | Not listed |
 Bobby Yip Kin-SangNot listed | Not listed |
| SStephen Tang Shu-WingNot listed | Not listed |
 Tai BoNot listed | Not listed |
 Radium CheungNot listed | Not listed |
 Keith Ng Shui-TingNot listed | Not listed |
| RRaymond Tsang Chau-MingNot listed | Not listed |