In this latest chapter of the PRISON ON FIRE saga, Fung, a gang leader sentenced to life imprisonment, gradually turns to religion. With the help of the prison's priest, Fung begins to preach to his fellow cellmates. But the toughest skeptic turns out to be his own son, who is now in the same prison.
| Actor | Role |
|---|---|
 Michael Tao Tai-YuCheng Shing Fung | Cheng Shing Fung |
 Michael Tong Man-LungBig B | Big B |
 Tong Ka-FaiCheng Chi Wai | Cheng Chi Wai |
 Lee Siu-KayUncle Kuen | Uncle Kuen |
 Akina Hong WahKee | Kee |
 Shing Fui-OnSilly | Silly |
 John Ching TungChung | Chung |
 Joe JuniorFather Law | Father Law |
 Karel Wong Chi-YeungBull Dog | Bull Dog |
 Joyce Tang Lai-MingYee | Yee |
 James Ha Chim-SiNot listed | Not listed |
 Law Shu-KeiNot listed | Not listed |