In her previous life, as a peasant girl, she was misidentified as a hostage from a neighboring country and entered the palace and was bullied to death. She was unexpectedly reborn to the day she was forced to leave home. With her prophetic memory and hidden bloodline, she not only had to outsmart the green tea lady and the insidious ministers step by step in the camp, but also had to fight with the mysterious and powerful emperor of the enemy country to the extreme, and finally revealed the secret of her former empress's legacy and her male protagonist's ambition to unify the country.