A group of police friends are investigating a suspicious fellow officer who might be involved in drugs and prostitution.
| Actor | Role |
|---|---|
 Anthony Wong Chau-SangInspector Chou Chien | Inspector Chou Chien |
 Lester Chan Chit-ManInspector Cheng Hui | Inspector Cheng Hui |
 Maggie Shiu Mei-KeiInspector An Chi | Inspector An Chi |
 Eddy Ko HungMr Hu | Mr Hu |
 Helena Law LanChien's mother | Chien's mother |
 Johnny Wang Lung-WeiSergeant Lei Shen | Sergeant Lei Shen |
 Law Shu-KeiChien's father | Chien's father |
 Cheung Wing-CheungNot listed | Not listed |
 Cho ChunNot listed | Not listed |
| LLing-Si ChowNot listed | Not listed |
| BBo-Law KeiNot listed | Not listed |
 Bruce Law Lai-YinNot listed | Not listed |
 Lee Tat-ChiuNot listed | Not listed |
 Leung Kai-ChiNot listed | Not listed |
| SSiu-Wah MokNot listed | Not listed |
| TTam Wai-ManNot listed | Not listed |
 Tang Chiu-YauNot listed | Not listed |
 John WakefieldNot listed | Not listed |
 Yeung WoNot listed | Not listed |
| LLeung Jun-GitCheng Hui (Teen) | Cheng Hui (Teen) |