He is a heroic young man who is both the apolitical second prince of the empire and a secretive thief. She is the most beloved fourth daughter of the most loyal general in the empire. Just because he and she were involved in a disaster when he was young, he decided to protect and cherish her for the rest of his life, even if she dared not step out of the house again. He is also willing to wait for her for ten years. When he finally has the opportunity to see her, even if there are all kinds of obstacles, he will never let her go. Ten years is neither long nor short. The deep palace is not a place to stay for a long time. He would rather give up his status of wealth and join hands with her to live peacefully in the world and travel around the world.