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
