Wang Qicong, deputy police chief of Hong Kong District Crime Squad, is an excellent detective in the district. He is observant, well dressed and a little neurotic. His advantage is that he works hard, but his disadvantage is that he is too emotional and even promiscuous. He has hooked up with policewomen many times, but he often fights with Yaoting Lee.
Yaoting Lee Aaron Kwok and Wang Qicong Eason Chan are from Hong Kong Island District Crime Squad and Kowloon District Crime Squad respectively. Although they are elite members of the police force, they have never met. Zhang Tiezhu Li Xiuxian, the head of the major crimes unit, received a tip that the international thief Ken Wang Pinyuan had secretly entered the country for illegal activities. Zhang Tiezhu decided to organize the elite of the police to set up a special task force, and Yaoting Lee and Wang Qicong were finally selected. Ken led several thieves to plan this operation, and the goal was a priceless diamond necklace. Ken's girlfriend Du Wu is a jewelry inspector, and they plan to quit the Jianghu after the operation is successful. Although Ken's action was successful, there was internal strife when he divided the money. Thieves headed by Ruan Beijin and Du targeted Ken and wanted to keep the diamond necklace for themselves. Du escaped with the necklace, while Ken fell into the hands of Ruan Beijin. So Du told the police that she was willing to exchange this necklace for Ken's safety. After that, the police began to track down the gang that kidnapped Ken, during which Yaoting Lee, Wang Qicong and Feng Baobao clashed constantly because of different opinions.