Duo Duo, one of the twin daughters of the Song mansion, has been treated as a jinx and suffered neglect since childhood, with only the maid Lvdou accompanying her. To curry favor with powerful nobles, the Song family substitutes her for her legitimate elder sister and marries her off to the disabled Prince Pingyang. Duo Duo possesses a special ability to see golden characters and heal wounds using golden light. After entering the prince's mansion, she remains kind and resilient; despite frequently encountering misunderstandings and crises, she treats everyone sincerely. Prince Pingyang and the princess consort gradually become moved by Duo Duo. Having gone through trials such as poisoning and assassination, Duo Duo risks her life to save the prince, and the family slowly accepts one another, depending on and guarding each other.