Focusing on the serious case group of the Criminal Investigation Detachment of the Xingang City Public Security Bureau, captain Chen Feng leads Lin Lan, who is good at criminal profiling, veteran detective Wang Jianjun, forensic doctor Zhao Lei and information analyst Li Wen, to uncover the details of one case in each chapter. They use professional forensic identification and precise logical reasoning to uncover the truth, expose social issues such as domestic violence and artistic conspiracy in suspenseful twists and turns, and stage the ultimate game between the iron-blooded police force and evil.
