Ruco Chan is a stellar detective in the Organized Crime and Triad Bureau (OCTB). He is brave, competent, highly regarded by his superiors and admired by his colleagues. But his ultimate dream is to join the Special Duties Unit. Another elite OCTB detective, Ben Wong, has a shrewd mind and lots of experience. Although Ruco and Ben handle things differently, they appreciate each other’s talent and complement one another’s weaknesses. The police get ambushed by criminals and suffer heavy losses. To find the mastermind behind the plot, Ruco gives up his dream and stays at OCTB. Aside from that, Ruco and Ben face a series of complicated and unpredictable unnatural cases. The two of them use reverse thinking, psychological game theory and careful analysis to deconstruct a criminal’s thinking and motives. Nothing can escape from the nets of heaven!