On the outset, the Okunos seem like a normal happy family with father Tadashi and his two bright sons, genetics researcher Izumi and artsy Haru. When a series of arson attacks strike the neighborhood, clues left at the crime scenes seem to be somehow related to the Okunos. Izumi and Haru try to get to the bottom of mystery, slowly unveiling a tragic family secret that has come back to haunt them.

香坂（长谷川博己）行动力强，能力突出，被称为“未来的搜查一课课长”。因为一次偶然事件，香坂被贬职到地方警署，失去了出人头地的机会。在分署里，香坂认识了身居低位却拼命解决案件的渡部（安田显），坚定了“正义比出人头地更重要”的信念，决心与黑暗的刑警组织斗争到底。

脑洞编辑竹山失恋后又回到了北海道美丽的小镇，三个逗逼这次又会擦出怎样的火花呢？~