The Shen family sponsors Pei Jingchuan's official career. Shen Zhaoning, who has been married for three years, encounters turmoil at a birthday banquet. Her husband's favoritism and conflicts within the household follow one after another, and she refuses to keep yielding. By chance, she discovers that she is actually the granddaughter of the Duke of Zhenguo and possesses the power of his former subordinates. Shen Zhaoning calmly puts her plans into action, uncovers the truth behind Pei Jingchuan's official achievements, obtains a successful divorce, and reclaims all the property that belongs to her. Afterwards, she enters the political struggle at court, wielding commercial trade routes as her weapon. She helps a prince eliminate rebellious forces, promotes new policies for women, breaks free from the shackles of her era, and becomes an independent and dazzling Princess Protector of the State.