The details of undercover police officers are deleted from a police database and a senior officer is left struggling to know who are the undercover officers and who are the criminals.
Blue
Shiu Chi-Long
Q-Sir / Inspector Q
Ding Siu-Ka
Foon Hei-Gor
Police Superintendent
Triad Member
Assassin
Tung Pak-Ho
Siu Ying, Blue's Bodyguard
Sniper
Kwok Ming
Ferrari Owner
Lam Tung Yau
Karina
Hong Sir
Samantha, CIB Detective
CIB Detective
