Set within Mongkok, Hong Kong, an area known as the most crowded in the world, a schizophrenic ex-con views his Mongkok surroundings as a prison he can't get out of after he is released from a 30 years jail sentence.
| Actor | Role |
|---|---|
 Nick Cheung Ka-FaiFai | Fai |
 Nina Paw Hei-ChingFai's mother (Charity) | Fai's mother (Charity) |
 Monica Mok Siu-KeiBig Fung (Pamela) | Big Fung (Pamela) |
 Natalie Meng YaoLittle Fung (Penny) | Little Fung (Penny) |
 Liu Kai-ChiGunner Yu | Gunner Yu |
 Willie Wai Ga-HungPorky | Porky |
 Wong JingEgg Tart | Egg Tart |
| JJuno Leung Chun-LungKid (Ga) | Kid (Ga) |
| TTang Tak-PoFai Junior | Fai Junior |
 Cecilia Chan Lai-WanCounselor Han | Counselor Han |
 Patrick TamPeter | Peter |
 Samuel Leung Cheuk-MoonKen | Ken |
 Wilson Tong Wai-ShingUncle Harry | Uncle Harry |
 Frankie Ng Chi-HungFai's father | Fai's father |
 Au Hin-WaiNot listed | Not listed |