Kikoku No Judan

[Machine Translation] Naoyuki Hinata, a detective in the Investigation Section of the Tokyo Metropolitan Police Department, is assigned to investigate a shooting incident on the banks of the Tama River. The gun used in the shooting matches the gun used in the "Super Ichimatsu Robbery and Murder Case" 22 years ago. The investigation of the cold case comes to a head. The case was the one that Shigeru, the father of Detective Oni, was in charge of. Shigeru was so absorbed in the investigation that he committed domestic violence against his wife and children, destroying the family. What is the truth behind the heinous case that the father and son of a police officer arrived at after a bone-crushing struggle?

警視庁捜査一課の刑事・日向直幸は多摩川河川敷発砲事件の捜査を命じられる。使用された拳銃の線条痕が、22年前の「スーパーいちまつ強盗殺人事件」で使用された拳銃と一致。迷宮入り事件の捜査が一気に動き出す。その事件は鬼刑事の父・繁が担当した事件だった。繁は捜査にのめり込むあまり、妻子にDVを働き家庭を崩壊させた。警官親子が骨肉の争いの果てに辿り着いた凶悪事件の真実とは―。