Undercover officer Ho joins forces with his new partner, Leung Yuk Chuen, to infiltrate a gang involved in heroin trafficking. However, they repeatedly encounter unexpected events and find themselves trapped in desperate situations…
| Actor | Role |
|---|---|
 So Chi-HoUndercover officer Ho | Undercover officer Ho |
| AAnson Leung Yuk-ChuenLeung Yuk Chuen | Leung Yuk Chuen |
| CChiu Chung-FatGangster Boss | Gangster Boss |
| AAdekunbi SalakoGhost | Ghost |
 HeyoGuan Gong | Guan Gong |
 Cheung Kam-chingNarrator (Voice) | Narrator (Voice) |
| CCheng HoSergeant | Sergeant |
| CCheung Tsz-YeungPolice Constable A | Police Constable A |
| WWong Yuk-HoiPolice Constable B | Police Constable B |