Serial cases of a street slasher who drives a motor scooter and cuts women from the behind happened. By the testimony of the second victim Mika, a man named Tsuji (Tara Hita) was arrested as a suspect. But Tsuji died during the interrogation by Lieutenant Nomura (Kazuhiko Kaneyama) with the observation of Inspector Shimoyanagi (Kousuke Suzuki). According to the report from Shimoyanagi and Nomura, there was no illegal interrogation. But Ukyou (Yutaka Mizutani) and Kaoru (Yasufumi Terawaki) find the report and doubt that the interrogation was truly right.