Song Wanyu, the princess of Huaiyang in the Great Xia Dynasty, has been obsessed with Anran, the Marquis of Changning for five years. She put aside her obsession, met Lu Chen from Hongxianglou and kept him by her side. Lu Chen's gentle companionship cured her loneliness, and the two gradually fell in love. An then found out that he wanted to redeem himself, and did not hesitate to use tricks to force him, but he did not know that Lu Chen was actually the prince of Northern Qi. In the end, Song Wanyu refused to marry An Ran, chose to marry Bei Qi, and reunited with Lu Chen. Not only did she gain true love, but she also facilitated the friendship between the two countries and finally achieved a happy ending.