He is the emperor of the Yan Kingdom and is aloof. She was the princess of the former dynasty who had lost her country. She kept her name anonymous and just wanted to live her life peacefully. He destroyed her country and killed her father and mother. They have a bloody feud but are entangled together. He fell in love with her at first sight and pursued her relentlessly. However, having lacked her father's love since childhood, she was attached to his maturity and gradually fell in love. Can two people continue to be together once they know their respective identities?