She, Du Wanru, is naturally beautiful and talented. He was selected into the harem by imperial edict, but has not yet been formally canonized. Unfortunately, he learned the real cause of his father's death, and wanted to enter the palace and win the dragon's favor to avenge his father. Unexpectedly, by chance, she fell in love with the prince, but she was forced to marry into an enemy country... Can she get love that will last forever? Can he avenge his father?