The former head of the Special Investigation Team (SIT) of the Metropolitan Police Department, Yukiko Makabe (played by Yuki Amami), faces criticism from her peers due to her female identity and straightforward style. She is subsequently reassigned by the Minister of Justice, Masanao Nagahara (played by Masao Kusakari), to the newly established urgent case interrogation unit in the first investigative division, which is led by Katsutaka Kajiyama (played by Tetsuji Tanaka), alongside three older detectives: Susumu Hishimoto (played by Tententen), Yoshijiro Nakada (played by Ren Osugi), and Haruo Koishikawa (played by Fumiyuki Komiyama). Yukiko's arrival inevitably draws the attention of the older detectives, and the detectives in the first investigative division are resentful that their interrogation duties have been taken over by this new unit, leading to dissatisfaction with the urgent interrogation room. In an era where case investigations have become increasingly standardized, the suspect's confession has become key to determining the case outcome. However, the police face opponents who are either silent for various reasons or slyly evasive. Yukiko continues to enter the interrogation room with her colleagues, persistently pursuing the truth behind the case...
