In a previous life, Song Shihuan returns after ten years of exile to be recognized as the heir to the crown prince's family. But despised by her entire family because she was prophesied to be a star of misfortune, she ends up dying at the hands of her own sister. When she is reborn on the very day of her recognition, she decides to change everything and asks the emperor for a new father. From among the choices offered, she chooses the eldest prince, known for being a hedonistic playboy. Taking her destiny and that of her new father into her own hands, she gradually helps him climb the steps to become emperor!