Modern forensic doctor Su Jin was infected with a special toxin and traveled to the Medicine King Valley of Canglan Continent to become an ordinary disciple Yun Shu. At that time, Yaowang Valley was coveted by various sects because it held the "Secret Book of Herbs". The owner of the valley was poisoned and fell into coma, and the sect was on the verge of crisis. At the critical moment, the "Forensic Traceability Medical System" bound Yunshu to help her accurately detect the virus and restore the truth. In order to protect Yaowang Valley, Yun Shu started by solving the poisoning case of the valley owner and uncovered the traitor elder. Then he joined forces with Ling Yue, the owner of Lingxiao Villa, to track down the Xuanyin Sect, which coveted the medical code, and uncovered layers of mysteries such as the destruction of the Qingfeng Village and the secrets of the medical code. In the end, the two put down the chaos of the Xuanyin Sect and pushed the world to sign the "Medicine Convention". Yun Shu also grew from a time traveler to a doctor respected by everyone, and joined hands with Ling Yue to practice medicine in the world and spend the rest of his life.