He was the prince of the Song Dynasty and was known as Saipan'an; but she was a kitchen girl with an ugly appearance. After a chance encounter, the fate of the two becomes entangled. He said he was not allowed to leave. But she left and came closer again and again. The heart is broken and the feelings are intense. But he not only belongs to her, he also belongs to this family, country, and the world. The two of them will travel to the end of the world accompanied by the stars and the moon, or they will never see each other until the end of the world.