The Wuqiang monarch died in the war, the queen set herself on fire, and the whereabouts of her favorite concubine, Mrs. Ling, are unknown. When the country was about to fall, Baili Song, the son of the princess Baili Zhi and his wife's brother, went through all kinds of difficulties and returned to the capital to assist Baili Song in ascending the throne. But who would have thought that she was not the eldest princess at all! The entanglement of love and hate between two generations, the court love in this life. Emperor's younger brother? Imperial uncle? The son of a traitor? ... The time for a truce with Di Country has come, but her identity is still confusing. Where should she go?