During the chaos of the last years of Dajing, Chen Ping'an, a young man guarding the tomb, accidentally met Li Banhu, a traveling doctor, and followed him to practice medicine and know medicine. He also met Wu Dan Su Qingyuan from the theater troupe and Wang Laodao, a dilapidated Taoist priest. The few of them struggled through famine, military disasters, and folk customs. Chen Ping'an has no teacher and no external plug-ins. He understands the truth of heaven and earth from the various situations of life and death, explores the threshold of practice step by step, keeps his true heart in the battles between immortals in troubled times, and finally attains immortality from the quagmire of mortal world and opens the gate of immortality.
