It was a night shift at the Imperial Hospital in a cold spring. Xu Han, a low-level medical officer, was taking shelter from the cold. However, the calm was suddenly broken by the emergency report that the chief minister's son was critically ill. Although he seems to be mediocre and dormant, he possesses undisclosed peerless medical skills and a hidden edge of character. This sudden emergency has become an opportunity for him to step into the court situation. In the whirlpool of medical theory and political intrigue, he uses his gentle attitude to break through the situation with a sharp edge and become more successful every step of the way.