The play mainly tells the story of Ding Xuekun, the director of the Department of Neurology of the Ninth Hospital, who died unexpectedly. His son Ding Yuanzhi, an elite Western medicine doctor who studied in Sweden, and Han Xilin, a Chinese medicine apprentice who had been abroad for many years, returned to the Ninth Hospital to jointly investigate the truth of the cause of death. In the process of pursuing the truth and saving lives, the two young medical workers went from the initial running-in to finally letting go of their barriers and supporting each other, organically combining traditional Chinese medicine diagnosis and treatment methods with modern Western medicine technology to solve many difficult and complicated diseases. The two are committed to promoting the culture of traditional Chinese medicine and promoting innovative diagnosis and treatment combining Chinese and Western medicine, and have experienced perseverance and growth together.