Tensions flare between PTU officers and the Complaints Against Police Officers unit when a security camera captures a triad member being brutalized by PTU officers.
| Actor | Role |
|---|---|
 Simon YamSgt Lee Wing Sam | Sgt Lee Wing Sam |
 Maggie Shiu Mei-KeiSgt May Cheung Pui Yee | Sgt May Cheung Pui Yee |
 Lam SuetTong | Tong |
 Joseph Lee Kwok-LunPC Eight | PC Eight |
 Teddy Lin Wai-KinSr Insp Wong Chung Ching | Sr Insp Wong Chung Ching |
 Cheung Wing-CheungChan Kam Shing | Chan Kam Shing |
 Lau Kwok-ShingChief Insp Chan Chi Yan | Chief Insp Chan Chi Yan |
 Lam King-KongPC Dak | PC Dak |
| RRoderick Lam Chung-KeiPC Suen | PC Suen |
 Luk Man-WaiPC Chung | PC Chung |
 Frank Liu Zong-JiWong Sir | Wong Sir |
| WWong Sze-YanInsp Wu Wai Chiu | Insp Wu Wai Chiu |
 Au Hin-WaiNot listed | Not listed |
 Jimmy Wong Wah-WoTong's subordinate | Tong's subordinate |