Rookie detective, Sahara Natsuki, is assigned to the Investigation Division of the Ginza police station. Here he has an unexpected reunion with his father and veteran detective, Akimura Shimao, from whom he has been estranged since his parents' divorce. They find themselves unwilling partners, butting heads repeatedly. Over time, however, Natsuki learns more about how to be a good detective from his father, and possibly how to let go of their past. ~~ Adapted from the manga "Bitter Blood" (ビター・ブラッド) by Shizukui Shusuke (雫井脩介).