Returned overseas medical professor Zhang Yan gave up a high overseas salary to return home and educate others, putting great effort into helping his student Chen Yao, only to have her weaponize rules and maliciously report him. After opportunistic behavior and disregarding medical bottom lines created a major hazard, Chen Yao was backlashed by the times. Zhang Yan steadfastly maintained his initial medical aspirations, leading Li Xiaohan in diligent research to bring glory to the country in international competitions, interpreting the responsibilities of a medical practitioner and conveying the patriotic philosophy of upholding baseline principles and serving the country through science and technology.