| Gordon Heung and Wai Sai-Lok have been long-time collaborators in the police force, frequently working with each other to solve drug trafficking cases in the city. During an operation, Sai-Lok discovers clues that point to Gordon being a corrupt cop in a collusion conspiracy with drug dealers. Suspicious about Gordon's true intentions, Sai-Lok launches a secret investigation on him. |
| Name | Character | Episodes |
|---|---|---|
| Lily Li | 30 | |
| Rainbow Ching | 30 | |
| Steve Lee Ka-Ting | 30 | |
| Derek Kwok Jing-Hung | Ho Kwai | 30 |
| Parkman Wong | 30 | |
| Ben Wong Chi-Yin | Poon Hok-Lai (Brian) | 30 |
| Ricky Wong Chun-Tong | 30 | |
| Henry Yu Yang | 30 | |
| Raymond Lam Fung | Wai Sai-Lok (Happy) | 30 |
| Geoffrey Wong Chi-Hung | 30 | |
| Alan Chui Chung-San | 30 | |
| Lam King-Kong | 30 | |
| Au-Yeung Jin | Ng Dak-Tim | 30 |
| Ella Koon | Ko Hei-Suen (Sandy) | 30 |
| Raymond Tsang Chau-Ming | 30 |