Shen Zhiwei, a modern-day forensic doctor, transmigrates to ancient times after a bizarre laboratory accident, becoming a mysterious and enigmatic coroner in the eyes of the world.
As soon as Shen Zhiwei arrives in the past, a strange death case arises. The victim has no visible injuries, yet has died under mysterious circumstances. The local coroner is stumped, and everyone believes ghosts or spirits are to blame. Using advanced forensic knowledge, Shen Zhiwei quickly identifies the killer from subtle clues such as lividity and stomach contents.
From then on, Shen Zhiwei repeatedly earns merit by applying professional expertise to one bizarre case after another. In a locked-room murder, he/she deduces the killer’s methods from the distribution of bloodstains at the scene. In a series of murders, he/she identifies the killer’s pattern from the characteristics of the wounds on the bodies.
But the road is far from smooth. The traditional coroners cling to old ways and are deeply skeptical of his/her new methods. Ill-intentioned people also frequently interfere in secret, hoping to sabotage the investigation. Fortunately, Shen Zhiwei befriends a loyal constable and a resourceful strategist. With their help, Shen Zhiwei repeatedly escapes danger.
While solving cases, Shen Zhiwei also gets caught up in court power struggles and martial-world feuds. Can he/she uphold justice, dispel the mists of the past with the light of science, solve every mystery, and clear the names of those who died unjustly?