Lin Yan, the former backbone of the cardiac surgery department at the No. 1 Hospital in the city, was framed and had his license revoked. His father died of an illness unjustly and he became a village doctor in the city. In a desperate situation, he activated the copper box medical records left by his father and unlocked the magical skills of "identifying bones and identifying diseases" and "ancient first aid".
City forensic doctor Su Qingyue came to investigate the suspicion of his father's "myocardial infarction" - the "fake ginseng" residue in his father's fingernails was actually related to the cause of death of Lin Yan's father, and pointed the finger at Zhao Liming, director of the city's first hospital. The two formed an alliance. One relied on medical skills to break the situation: a silver needle revived a dying old man and uncovered the shady story of pharmaceutical companies' sewage discharge; the other relied on autopsy to trace the source: digging out evidence of tampering with medical records from the details of the bones.
The help from retired criminal policeman Lao Zhoutou, the public humiliation from his ex-fiancée, and the crazy pressure from the pharmaceutical companies behind Zhao Liming did not stop Lin Yan. He started from an alley clinic, used his medical skills to defeat the powerful, and gathered people's hearts with his kindness. However, he discovered that the copper box medical records contained secrets that were more important to the lifeblood of the medical world...