Shen Zhaoning, the legitimate daughter of the Zhenbei Hou Mansion, was oppressed by her concubine Zhou and her daughter Shen Yurou for a long time because her mother died young and her father was obsessed with military affairs. Relying on her intelligence and forbearance, she secretly collected evidence of the Zhou family's misappropriation of family property, murder of his legitimate son, and scheming to marry a wealthy businessman. She first exposed the loopholes in Zhou's housekeeper and regained the power of the family, and then solved Shen Yurou's conspiracy to steal the marriage and gain the freedom of marriage. Later, when the Hou Mansion was caught in an enemy spy crisis, she helped her father resolve the crisis and gained trust. At the same time, Gu Huaizhi, an enemy hostage living in the Hou Mansion, used each other to get to know each other and fell in love. After Gu Huaizhi's identity was exposed, the two jointly dealt with the enemy's threat. In the end, Shen Zhaoning became the actual person in charge of the Hou Mansion and defeated the Zhou family. Gu Huaizhi realized his revenge plan and joined hands to protect the Hou Mansion and the country.
