Su Wantang, the daughter of a medical business family, fell into disgrace because her father was involved in a strange case. When she was living in the market, she activated a copying system and could copy the enemy's bloodline, skills and props through contact. In order to avenge her father's grievances, she returned to her old home as a wandering doctor. She and Gu Zhao, the loyal and brave prince of the Hou family who appeared to be weak but actually had a hidden edge, became happy enemies who were at odds with each other. They gradually joined forces to fight against her cousin who was jealous of her talent and beauty, Qingmei who had turned black, Wei Zhongsi, the rebellious eunuch, and rivals in the medicine shop who wanted to annex the Su family's trade route. In the dual whirlpool of house fighting and business war, Su Watang used copied medical, poison, arithmetic and other skills to break the situation, while Gu Zhao used his sick body to pave the way for her to become an official and business official, and finally revealed the double truth about the old cases and the origin of the system.
