Lila, an orphan adopted by the Louis family, originally had three doting older brothers and a happy family. However, after the return of the Louis family’s real daughter, Lily, she became a “stand-in” who was constantly bullied and mistreated. Repeated misunderstandings and hurts left Lila utterly disheartened. Eventually, she chose to become a volunteer for her eldest brother’s scientific research project, the “Lila Sleep Program.” She decided to repay the family’s nurturing kindness by sleeping for thirty years and donated her corneas to restore sight to her second brother, who had gone blind. Only after she completely disappeared did the Louis family discover the truth and realize their mistakes, filled with regret. Thirty years later, the experiment succeeded, and Lila awoke, having forgotten everything…