Duo Duo, the second daughter of the Song family, has never been valued since childhood. To protect her legitimate elder sister, she is sent to the ailing Prince of Pingyang's residence to take her sister's place and inherit her position. Believing her future will be bleak, she unexpectedly encounters a prince who is cold on the outside but warm within, and a gentle, kind princess consort. From being cautious and considerate at every turn to gradually receiving sincere affection, Duo Duo experiences for the first time what it feels like to be cherished. The once silent and desolate princely residence gradually regains its long-lost warmth and everyday liveliness because of this thoughtful little girl.