Yoake Sudeo, a former elite detective with the Tokyo Metropolitan Police, now works as a taxi driver. One day, he picks up Michiko Takanezawa, a university assistant professor recently acquitted of murdering her former lover. Hounded by the media and the victim’s wife at her home, Michiko pleads with Yoake to drive her to her hometown, Aizu-Wakamatsu. But the next day, the wife of the murdered professor is found dead near Tokyo—turning the case on its head.