Chen Qingfeng was accidentally reborn into his youth while investigating a serial murder case. With his advanced criminal investigation awareness and experience, he repeatedly solved strange cases in an era when equipment was backward and the system was first established. From blood stains to psychological portraits, he uses reason and courage to illuminate the truth in the darkness. As time goes by, Chen Qingfeng regains his original intention in solving crimes and self-salvation, and also uncovers the mystery of his fate and life experience. In the end, he used his life's persistence to protect the most precious beliefs in that chaotic era - justice never grows old and truth never dies.
