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
• Charmaine Sheh
• Hui Shiu-Hung
• Li Guangjie
• Zhang Huiwen
• Xing Yu