The members (Watase Tsunehiko, Inohara Yoshihiko, Taguchi Hiromasa, Tsuda Kanji, Fukikoshi Mitsuru) of the First Investigative Division’s Ninth Section each have personal problems and troubles as individuals before they are police officers. Although these overly individualistic members may even oppose each other in investigations, what unites them is their strong sense of justice. They appear uncoordinated in their actions, but each of them will channel all energies to the arrests of criminals and grapple with difficult cases.