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
Tung Pak-Ho
Siu Ying
sniper / assassin
Kwok Ming
Police superintendent
Guy blocking Blue at meeting
Assassin
Uncle Heen
Master Fung
Karina
Samantha, CIB detective
Hong Sir
Lin Dongyou
Kwok Ming's thug
Stunt Double
Pyrotechnician
Director
Editor
Cinematography
Producer
Music
Writer
