Cuicui, an adopted daughter who grew up in the countryside, unexpectedly learned when she was fourteen that she was the long-lost princess of Prince An's palace. After being taken back to the palace, she met her gentle and kind-hearted sister. The two grew up together and formed a deep friendship that was better than that of real sisters. For the sake of the peace of the family and the country, her sister went to the Liao Kingdom to make peace with her husband. Cuicui married Song Jiangting, the eldest son of the British Duke, and worked hand in hand with him to take care of the family affairs and go through the national crisis together. Many years later, when the border was settled, the couple returned to the Shu land and unexpectedly reunited with their lost brother. In the years of peach blossoms, they gained their own happiness and warmth.