The story begins with Situ Yingxiu being reborn back to the night when she was twelve years old and her younger brother, Situ Chenlei, was rescued after falling into the water. In her previous life, on the day her fiancé, Mu Rongchangqing, triumphantly returned, she was framed and imprisoned. Eventually, she jumped off the White Pagoda and died. Now, with her memories, she returns to a turning point in her family's fate. After her rebirth, she keenly perceives the crisis in her family: the boatmen hired by her father intended to rob and kill them. With the help of the mysterious nobleman Zheng Hao, she resolutely eradicated the bandit threat, but was plunged into even greater mysteries - the strange disappearance of her biological mother, the hidden connection between her family and the royal family, and the shocking secrets behind Zheng Hao's identity. Situ Yingxiu gradually uncovers the mystery of her life experience: her father was actually a prince who had been living among the people, and she has a special bloodline. While protecting her younger brother Xiaolei, she maneuvers among her stepmother Zhang Shi and stepsister Situ Anxiang. Zheng Hao, who appears to be suave and unrestrained on the surface, actually helps her secretly. As they search for the truth, affection develops between them. At the same time, Mu Rongchangqing's attitude gradually changes from being distant to actively protecting her. The strange illness of Xie Dongli and his broken engagement with the Zhang family bring the undercurrents of the court's power to the forefront. The family crisis breaks out in full force: her eldest uncle colludes with water bandits, Zhang Shi's past comes to light, the Shen Prime Minister's Mansion secretly supports them, and the power struggles between Nanzheng and Dongyuan are intertwined. With the help of Zheng Hao, Situ Yingxiu uncovers the evidence of her eldest uncle's treason, but is caught in the power game between the Second Prince of Nanzheng and the Crown Prince's grandson of Dongyuan. The truth about Xie Dongli's illness is revealed, and his broken engagement with Zhang Zhenqin causes a stir among the five major aristocratic families. Zhang Zhenqin's encounter with Yu Shunhao, the Number One Scholar in the Martial Arts Examination, adds new variables to the story. The mystery of Mu Rongchangqing's life experience emerges, and the military power of the Changxing Marquis Mansion becomes the focus of contention among various parties. Situ Yingxiu, with her medical skills and strategies, successfully resolves the family crisis. Zheng Hao gives up his status as a hostage prince to protect her, and the two of them work together to expose the marriage conspiracy between the Dongyuan royal family and Nanzheng. Xie Dongli passes the imperial examination with the highest honors and becomes the Grand Chancellor. Zhang Zhenqin and Yu Shunhao finally get married. Mu Rongchangqing is seriously injured while protecting Situ Yingxiu. As the "Daughter of Destiny," Situ Yingxiu unites with the Shen Prime Minister's Mansion and the Changxing Marquis Mansion to stabilize the foundation of the Dongyuan Kingdom.