Wang Zhicong (played by Felix Wong), who used to work as a CID, was upright, bold and careful, and he had solved many strange cases. However, he also had a bad side, which was that he was easily impulsive and arbitrary, and he often ignored the instructions of his superiors and the advice of his companions. Once, Zhou Jiaxiang (played by Li Chengchang), a friend and colleague of Zhicong, colluded with the gang to plan an armed robbery in order to pay off the high-interest debt for his girlfriend who was addicted to gambling. After the case was arrested, Zhicong was arrested by himself. Zhicong and the young detective Lin Yongtai (played by Chan Kam Hung) of the O-Tribe had a grudge because of their different styles of doing things. It is true that enemies do not meet each other. After Zhicong was transferred to the O-Tribe, he was assigned to the same group with Yongtai. Zhicong, who was arbitrary and independent, and Yongtai, who was conservative and did everything according to the rules, had a quarrel from the beginning and blamed each other. But after getting along for a while, they both admired each other's persistence and justice, and thus became the best partners in fighting crime in Organized Crime and Triad.