Assistant Inspector Himekawa Reiko (Takeuchi Yuko) rose from the non-career track to become the only female section chief in the Tenth Homicide Section of the Metropolitan Police’s First Investigative Division. Director Hashizume (Watanabe Ikkei) has been keeping tabs on her because of her daring investigation methods. Team Himekawa is made up of dutiful subordinates Kikuta Kazuo (Nishijima Hidetoshi) and Ishikura Tatsumo (Ukaji Takashi), the diligent but withdrawn Hayama Noriyuki (Koide Keisuke) and read morenewcomer Yuda Kohei (Maruyama Ryuhei). They proceed with investigations while fighting against Teams Kusaka (Endo Kenichi) and Katsumata (Takeda Tetsuya). Although Reiko has personal problems and past trauma, she does not bring this to the workplace. She tackles cases head-on and closes in on the truth with her sharp instincts.