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.

• Shaw Brothers
• TVB
• Nick Cheung Ka-fai
• Louis Koo
• Francis Ng Chun-yu
• Charmaine Sheh Sze-man
• Benz Hui Siu-hung
• Moses Chan Ho
• Louis Cheung
• Clara Lee Sung-min