Shen Qingci, the fifth princess of Qi, grew up without a mother, enduring constant disdain. Her imperial father treats her as a disposable pawn and sends her far away to marry Xiao Xuanye, the Crown Prince of Yan, who is rumored to be cruel and bloodthirsty. After seeing how heartless her childhood sweetheart truly is, she cuts ties with the past and resolves to fight for her own survival. Facing provocations from a secondary consort, schemes by her homeland, and political intrigue at court, she earns recognition through her mastery of military strategy, builds alliances, and gathers former loyalists. She personally travels to the northern frontier to defend the city and commands troops on a snowy night to suppress a rebellion. From a princess used as a pawn in a political marriage to an empress who shares the rule of the realm with the emperor, she steadily reclaims her destiny and makes the cold-hearted crown prince willingly pledge himself to her.