Li Wangdi was reborn and returned to the day when her grandmother sold her sister. She and her sister, who was also reborn, had their own thoughts. Li Wangdi secretly planned to punish her family members who favored sons over daughters step by step, and rescued her sisters who treated her sincerely. Finally, with wisdom and hard work, she was admitted to a prestigious school, reunited with her fiancé who was also reborn, and completed the perfect life that had not been completed in her previous life.