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.

Cast:Nick Cheung Ka-Fai, Louis Koo, Francis Ng, Charmaine Sheh Sze-Man, Benz Hui Siu-Hung, Moses Chan Ho,

Genre:Action, Crime, Drama,

country:China, Hong Kong,

Production:Shaw Brothers, TVB, PJ One Cool Film Company Limited, One Cool Films, Stellar Mega Films, J.Q. Pictures, Media Asia Films,