In the IPSC practical shooting competition, police officer Zhuang Ziwei (played by Daniel Wu) broke the record of the competition, but the new record was soon rewritten by Hong Kong fund manager Guan Youbo (played by Louis Koo), who won the championship. After the competition, Guan Youbo happened to encounter masked gangsters robbing a cash delivery vehicle, and the cash delivery officer was beaten to death by the gangsters. At this time, a traffic policeman (played by Lian Kai) passed by and was injured by the gangsters. In order to save people, Guan Youbo shot and killed 4 robbers and called the police. Another gangster fled in panic, and at the same time, 400 million US dollars of bonds were robbed. The traffic policeman was rescued and he was nursed by Guan Youbo's girlfriend (played by Charlene Choi). Guan Youbo was detained for illegal gun injury. Zhuang Ziwei found that he was unusually calm during the interrogation. Facing the prosecution's accusation, Guan Youbo responded calmly and was released in court. His female boss (played by Li Bingbing) took him home, but he did not appreciate her kindness. Guan Youbo's account had a cash flow problem, and he was trying to delay the repayment time. Zhuangzi Wei a clue in the investigation of crimes , so consult a rifle king (Alex Fong ornaments ) , from the conversation , he seems to smell a crucial clues ...