The Song family's second daughter, Duoduo, has always been overlooked at home. To protect her elder sister, she enters Prince Pingyang's manor and accepts the title in her sister's place. The prince seems cold, but is kind-hearted inside, while the princess has a gentle nature. When Duoduo first arrives, she is cautious and thinks everything through again and again. As they spend their days together, she finds herself treated with genuine kindness. This manor, usually so quiet and lonely, gradually fills with warm, lively cheer thanks to the little girl.
