Lin Beili, the legitimate daughter of the Chancellor, lived in the north with her mother since she was a child due to her parents' divorce. She tried her best to hide her true self. No one expected that this boudoir girl was actually the "Ghost Fire General", the guardian hero of the people on the border. A granted marriage forced her to leave the North. She fell in love with the sinister and multifaceted fifth prince Li Shuli and cut off her love with tears. In the end, she joined forces with Liu Jifeng, the general who gradually fell in love with her, to protect her homeland and finally retired to the north.