The orphan Lu Mingyue, adopted by the Lu family, once had three doting older brothers and a happy life. However, everything changed when the Lu family's biological daughter, Lu Xingchen, returned home. Mingyue was reduced to a mere "stand-in," bullied and neglected. After repeated misunderstandings and hurt, Mingyue became disheartened and chose to volunteer for her eldest brother's scientific project, the “Mingyue Sleep Plan,” agreeing to sleep for thirty years as a way to repay the family's kindness. She also donated her corneas to help her second brother regain his sight. When she disappeared, the Lu family finally realized the truth and regretted their actions. Thirty years later, the experiment succeeds, but when Mingyue wakes up, she has forgotten everything...