The heroine was born with memories of her past life into a general's household whose master was on brotherly terms with the emperor. She has four accomplished older brothers, all skilled in both letters and arms and holding important positions, a father who is a great general, and a beautiful mother who is highly skilled in martial arts and has a fiery temper.
As a child, the heroine was betrothed by her parents and the emperor and empress to the crown prince, who is six years older than her. She left home to study at the age of three, traveling far and wide. She is highly skilled in martial arts and medicine, and is also the fearsome ruler of a city in a lawless region.
By chance, she secretly saves the injured crown prince without revealing her identity. He can't forget her and, after returning to the capital, opposes his marriage to the heroine.
After many twists and turns, they recognize each other. Because of memories of the scoundrel she loved in her previous life, the heroine resists marriage and has lost faith in love, so she keeps her distance from the male lead. For various reasons, the two join forces to fight powerful nobles, provide disaster relief, and resist foreign enemies. Eventually, the heroine sees how sincere the male lead's feelings are and decides to give marriage a try. They then spend the rest of their lives together.
