Fang Rongzhou, commander-in-chief of Hong Kong Police, faced a dual crisis of career and life when the reputation of police force reached its peak. The person who caused all these crises was Ah Qiu whom he had not seen for many years.

Fang Rongzhou (played by Andy Lau), the commander-in-chief of police operations representing Hong Kong, faced a dual crisis of career and life when the reputation of the police force reached its peak. The person who caused all these crises was Ah Qiu (Nicholas Tse) whom he had not seen for many years. When they meet again, Ah Qiu becomes the most evil criminal and plunges Hong Kong into a huge crisis.