After the maid Yuying was reborn, she saw through the poisonous plan of the Crown Prince's wife to have a child through her belly, and started to take revenge step by step. She slept with Cui Yichu, but she used her identity to stir up trouble around the eldest son Zhao Xuanyou, overthrew the evil servant, and exposed Cui's loss of virginity before marriage. From being used as a substitute to being protected by one's heart, Yuying and the prince went from calculating to delivering one's heart. Mrs. Cui was divorced, and undercurrents surged in the court. The prince promised to stay with her for the rest of his life when the situation calmed down, a rebirth and counterattack, and finally ushered in the pinnacle of power and a loving home.