The story takes place in the middle of the Northern Song Dynasty. The profiteer Su Guangping (played by Li Jianyi) decided to marry Shi Wuji (played by Qi Ji), the owner of Aolongbao, under the trend of interests. Shi Wuji chose Su Huaner (played by Zhao Liying), a humble illegitimate girl. However, Su Huaner's personality was unruly and she dared to escape from marriage. In desperation, Yang Yiliu (played by Zhao Liying), who looked very similar to Su Huaner, married into the Shi family instead of Su Huaner. In the Shi family, Yang Yiliu suffered a lot and was tortured. However, she was strong and kind and did not give up on herself. Instead, she relied on her own efforts to constantly influence the people around her. In an accident, Yang Yiliu saved the fourth lady Shi Wuxia (played by Zheng Qian). After that, she relied on her own intelligence and wisdom to resolve many conflicts within the family. As time went on, Yang Yiliu and Shi Wuji gradually developed a sincere relationship between husband and wife. However, at this time, Shi Wuji's confidant Ma Xianmei (played by Yang Zimo) appeared in front of the two and asked for a name.