Amagi Yu (Higashiyama Noriyuki) and Katagiri Masatoshi (Yoshida Kotaro) have become subordinate and boss in the Criminal Documents Unit while Mizuta Tamaki (Kurashina Kana) and Aoyama Arata (Tsukamoto Takashi) remain detectives in the Twelfth Section under the instructions of Katagiri. Together with professor of forensic medicine Domoto Shuntaro (Kitaoji Kinya), veteran senior detective Ebisawa Yoshiki in the Twelfth Section and newbie Nonomura Takumi (Shirasu Jin) who is Amagi’s subordinate, the seven of them take on old unsolved cases.
(Source: JDrama Weblog)