Sada (Teruyuki Kagawa), who was in charge of the murder of a wealthy family's daughter that took place 18 years ago, is confronted by Fukayama (Jun Matsumoto) about whether there were any flaws in his interrogation. After repeatedly reviewing news footage from that time, Fukayama senses the possibility that testimonies were twisted, illegal investigations and fabrications took place. He thoroughly investigates the case, demanding to find out who the real culprit is and to start a retrial.