Two detectives communicate through a walkie-talkie to solve cold cases. One detective exists in the present day and the other detective exists 15 years in the past.
胜村政信,光石研,中尾明庆,槙田雄司,古畑星夏,木南晴夏,高桥玛莉润,山内圭哉,宫世琉弥,冈崎体育
清原翔,石桥静河,筒井真理子,伊藤健太郎,真岛秀和,山本启之,高田里穗,永岡卓也,石井杏奈,曾少宗,手島実優