She is the youngest daughter of the prime minister. Because of her beauty and talent, she was framed by her sisters and sent to the northern border. He is a general of the empire, possessing supreme military power and supreme power. He sets out to guard the border due to the enemy's massive invasion. When a woman disguises herself as a man and enters the military camp, and he, who is the strategist among thousands of troops, meets in this chaotic war, what kind of love story in the Warring States Period will be written.