Li Muchen, a cultivator who is just one step away from the Innate Realm, descends the mountain and heads to the Lin family in Hecheng to fulfill an arranged marriage promised by his grandfather. Upon arriving, he suffers humiliating insults and an assassination attempt at the hands of Mrs. Lin and her ilk. Revealing his astonishing martial prowess, Li Muchen calls off the engagement. He then reunites with his childhood sweetheart Ding Xiang, with whom he once endured hardships, and his sworn brother Ma Shan. Deciding to remain in the mortal world and secretly protect them, Li Muchen uses his overwhelming martial arts, medical skills, and immortal techniques to win over a Tai Chi grandmaster, underground kingpin Feng Tianming, and the young master of the Shen Zhou Chen family. He also befriends exceptional martial artists, including Yizhi Mei, who lives incognito among ordinary people, gradually building his own network of influence.