Back in the days in China, a strange case known as the “Human Clock” murder occurs in Jiangzhou. Song He, the captain of the investigation team, is tasked to solve the case. He has his suspicions about a famous lawyer, Qin Weilian. Qin Weilian’s son, Qin Huole, who is specialized in psychological analysis, returns from abroad. He tried to clear his father’s name despite having conflicts with Song He. Along the way, they become friends with the forensic doctor, Fan Xiaofan. These three young men, each with different backgrounds and personalities, work together to protect their loved ones. In the blood-shed Jiangzhou shrouded in mist, they use wisdom and faith to uphold justice, and stay true to their beliefs in a life-or-death situation, becoming the most inspiring, heart-warming and brightest story of that era.