Knowing the Law and Breaking the Law is a Hong Kong film directed by Marco Mak and starring Ceng Zhiwei and Daniel Wu.

The film tells the story of a policeman Mike and his partner Zi Cong patrolling together and meeting a robber who robbed in the ice room. Mike immediately pulled out his gun and killed the robber, but his boss thought he was suspended for shooting indiscriminately, which led to the story.

Synopsis: Liang Da

Police officer Mike (Daniel Wu) and his partner Zi Cong patrol together. When they met a robber and robbed him in the ice room, Mike immediately pulled out his gun and killed the robber, but his boss thought he shot indiscriminately and was suspended. During his suspension, Mike happened to meet the gangster Tian Ge (Ceng Zhiwei) and Tian Ge's wife Pauline (Guan Xiumei) and held a birthday reception in the VIP room of the restaurant.

At the birthday party, Brother Tian executed the family law to deal with traitors, and the bloody scene made Mike dumbfounded. Mike began to secretly envy God's lifestyle and sexy wife. Later, Mike was summoned by his boss, and the police apparently fired him. In fact, it is necessary to arrange to take him undercover, and the target of the investigation is Brother Tian. Mike succeeded in the upper position with excellent skills and extraordinary courage.

With his undercover identity, Mike kept rooting out dissidents, developing a love affair with Pauline, and even killing Zi Cong. It was too late to know that day, and finally Mike died at the hands of his favorite women Archie and Pauline.