Li Muchen, who had been carefully educated by the nine teachers in Kunlun since childhood, went down the mountain with his marriage contract to attend appointments as an adult, but was repeatedly treated coldly at the He Lin family. He realized that the Lin family was being invaded by evil spirits, and used his superb medical skills to save the critically ill Mr. Lin, which revealed his life story - he was a surviving descendant of the Li family, a prominent family in the capital in the past. Faced with the disputes and secret plots among wealthy families, Li Muren relied on his integrity and skills to resolve crises one after another and uncover those with ulterior motives. He was determined to clear his family's grievances and revitalize his family, and made a promise at the Lin family ancestral hall that he would spend three months to prove himself and marry Lin Manqing in a dignified manner.