A prince who has been despised since childhood, a princess who has gone through many vicissitudes of life, a Xiaojiabiyu who cannot control her own destiny, and a loyal personal bodyguard. In the political career, they met by chance. The brother-sister relationship between the prince and the princess is deep, the prince and the girl love each other without regrets, the guard and the princess love each other for life and death, and the guard and the prince's loyalty remains unchanged. Section after section, song after song, it makes people cry.