A veteran inmate takes a newcomer under his wing as the pair confront both other violent inmates and the prison's corrupt wardens.
| Actor | Role |
|---|---|
 Tony Leung Ka-faiLo Ka Yiu | Lo Ka Yiu |
 Chow Yun-FatChung Tin Ching | Chung Tin Ching |
 Roy Cheung Yiu-YeungOfficer "Scarface" Hung | Officer "Scarface" Hung |
 William HoMicky | Micky |
 Tommy WongBill | Bill |
 Victor Hon KwanChiu Chow | Chiu Chow |
 Terrence Fok Shui-WahYung | Yung |
 Frankie Ng Chi-HungBlind Snake | Blind Snake |
 Wong Man-GwanMimi | Mimi |
 Joseph Chi Chiong ChavezBilly | Billy |
 Shing Fui-OnMad Dog | Mad Dog |
 Leung MingYiu's Father | Yiu's Father |
 Law Shu-KeiPrison Superintendent | Prison Superintendent |
| CChan Yuen-TatKau Suk | Kau Suk |
| SShui-Chiu GanPolice Inspector | Police Inspector |
| KKwong-Tim LeePrisoner | Prisoner |
| TTam Wai-ManPrisoner | Prisoner |
 Lo Hoi-PangNot listed | Not listed |