Liu Yue Ping reports to the ICAC about a rich 2G Cao Yuen Yuen who bribed officers of the Hong Kong Correctional Services (HKCS) from inside the prison. William Luk decides to infiltrate the prison as an inmate to conduct his investigation, while his partner Ching Tak Ming and Chief Inspector Lau Po-keung back him up from the outside.

Louis Koo

William Luk

Kevin Cheng Ka-Wing

Ching Tak-Wing

Raymond Lam Fung

Tso Yuen-Yuen

Gordon Lam Ka-Tung

Wong Man-Ban

Chrissie Chau Sau-Na

Natalie Liu

Louis Cheung

Wong Lam-Luk

Julian Cheung Chi-Lam

Lau Po-Keung

Patrick Tam Yiu-Man

Sum Kwok-Keung

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