Using the political decline of Northern Song dynasty as the background, this is the story of the Four Great Constables upholding justice while punishing the wicked.
Raymond Lam
Ma Kwok-Ming
Sammul Chan
Ron Ng
Kate Tsui
Selena Lee
Felix Lok Ying-Kwan
Gordon Liu Chia-hui
Joel Chan
Ka-Wah Lam
Halina Tam Siu-Wan
Felton Law Gwan-Joh