Lee Ying, who is the chief inspector of Regional Crime Unit, is newly promoted to Royal Hong Kong Police Cadet School as Deputy Commandant. He confronts a group of youngsters of different social backgrounds, turning them into self-disciplinary and self-contained young men.
| Actor | Role |
|---|---|
 Danny Lee Sau-YinCommander Lee Ying | Commander Lee Ying |
 Joan Tong Lai-KauMdm Tong Suk Yee | Mdm Tong Suk Yee |
 Alan Ng Siu-HungOffice Alan Chung | Office Alan Chung |
 Nick Cheung Ka-FaiNick Cheung | Nick Cheung |
 Power Chan Kwok-PongWong Wai Kit | Wong Wai Kit |
| HHung Tung-KimNot listed | Not listed |
 Shing Fui-OnKit's Father | Kit's Father |
 Lisa Chiao ChiaoFai's Mother | Fai's Mother |
 Kenneth TsangMr Tsang | Mr Tsang |
 Parkman Wong Pak-ManSgt Wong | Sgt Wong |
 Wong SanNot listed | Not listed |
 James Ha Chim-SiSgt James | Sgt James |
| LLau Yuk-GeiSgt Bill | Sgt Bill |
| TTse Wai-KitCadet 666 | Cadet 666 |
 Ng Kwok-KinTrainer | Trainer |
 Lee Kim-ChungNot listed | Not listed |
| KKent Got Ying-KinNot listed | Not listed |
| LLee Wan-FeiNot listed | Not listed |
| BBilly Pang Bei-LeiNot listed | Not listed |
 Ernest MauserNot listed | Not listed |
 Fei PakNot listed | Not listed |
| CCheung SiuNot listed | Not listed |
| CChow Chi-KeungNot listed | Not listed |
| CCheung Wai-KitNot listed | Not listed |