Based on the novel of the same name by Tomotake Ishikawa, it tells that the protagonist Eiji Ma (Tuan Hiroshi) used to incriminate the innocent people in the cases he was responsible for, and has always come before retirement with the idea of ​​atonement. One day he heard two guests talking about the crime of murder in an izakaya, so he suspected that the death row prisoner named Gunei Bowen was unjust, so he started an investigation in the \”Misjudgment Countermeasures Room\”. However, Gunai\’s execution date is approaching…