Rick (Leslie Cheung) is a top shooter. Since his first participation in the IPSC actual shooting competition, he has won several championships. Rick's specialty is double tap, that is, firing two shots in the shortest time with the bullet holes at the same point. Rick is also an expert in improving guns. After his improvement, the performance of the gun can be brought to the highest point. Inspector Miao Zhishun (Alex Fong) is also a good shooter. This time, the two showed their skills in the IPSC competition and were evenly matched. In the play-offs, a policeman who failed in stock speculation suddenly became mentally ill and threatened the crowd with a gun. At the critical moment, Rick decisively shot him dead. Shooting others has brought a serious psychological burden to Rick. Symptoms such as insomnia, headaches, and even hallucinations make him unable to sleep and eat. What's more terrifying is that the inner demon has been created. He actually gets unparalleled pleasure from killing people. No matter how hard he tries to get rid of it, it seems to be in vain...