Sun Fei, on the surface, is a Chinese medicine doctor, but in fact he is a unique master. He has been assigned various jobs by mysterious people many times, including bodyguard, intensive treatment, and joining the army... As a doctor, he uses Qi control acupuncture, Qi transformation knife and other traditional Chinese medicine surgeries and bone-setting methods to help the world and save the common people. As a warrior, he eliminates internal spies, safeguards national security, and crushes foreign conspiracies.