Su Wanning, the legitimate daughter of the Duke Who Protects the Nation, is reborn three days before her family's property is confiscated, carrying memories of her entire family being brutally killed in her previous life. She sells off the gold, silver, shops, and antiques belonging to the Duke's residence, exchanging everything for grain, medicinal supplies, farming tools, and ironmaking materials. She wins over the steward, Uncle Fang, persuades her father, Su Zhenxing, to forge a false military formation map, and moves the supplies to the western frontier. On the day of the confiscation, the Imperial Guards find only the fake map, and the Su family willingly enters prison. The ruler sees through Prince Jing and Queen Yin's conspiracy, and the marauders are ambushed and soundly defeated by the Su army. Su Wanning demands three conditions: clearing her family's name, executing the treacherous conspirators, and granting her control of the western frontier's military forces. She then implements five measures: improving saline-alkali land, building water conservancy projects, establishing free schools, developing military farming, and training troops, transforming the western frontier into a peaceful and stable home.