Lin Shuyue and Lin Jinglan, two sisters in the Hou Mansion, one is a good doctor and the other is good at martial arts. The family was framed by treacherous ministers and enemy countries. The father and brother died tragically, the prince's mansion was destroyed, and the sisters were forced to flee. After the separation, Shuyue went north to the border and established herself as a doctor, helping the general Chu Rong to secure the people and defend the border; Jinglan sneaked into the capital and established an intelligence network to assist the third prince Xiao Jingheng in his pursuit of power. The two of them, one bright and one dark, echoing each other from afar, eventually uncovered the conspiracy, redressed the grievances, and settled the country. In the end, Jinglan takes charge of the middle palace, and Shuyue guards the northern border. The two protect their homeland in different ways, and live like they yearn for each other. Letters are always exchanged, and the mountains and rivers are safe.
Determination: To break this world, for you and me