During the heyday of the Heian Dynasty, the two clans of humans and witches welcomed the birth of their first successor. The palace was peaceful and festive, but the nightmare opened its curtain. The childhood sweetheart whom she has cared for her whole life made her experience the pain of the destruction of her country and her family, and the loyal guard who never gave up made her tortured by betrayal and calculations. However, she still smiled confidently and worked hard to rebuild the peaceful dynasty, but the surging memories cruelly shattered her dream again...