The orphaned daughter of a distinguished military family, Song Xuan, is suddenly ordered by the emperor into a political marriage—with Bai Manchuan, a notorious playboy of the capital. Bai Manchuan initially vows to refuse, but with his marquis household facing financial ruin, he is forced to accept. On their wedding night, Song Xuan lays down strict household rules, demanding that Bai abandon his reckless ways and devote himself to study. Reluctantly, he embarks on a path of learning. Under her firm guidance and steady companionship, Bai Manchuan gradually sheds his frivolity and begins to mature. However, as the emperor falls gravely ill, the court descends into turmoil. Chancellor Shen conspires with nomadic tribes to usurp the throne, framing the Bai family in the process. Shen Lingbo, the chancellor's daughter—once indebted to Bai Manchuan and secretly in love with him—spirals into obsession after being rejected, ultimately becoming the mastermind behind the scheme. When a coup erupts, the Bai family risks everything to protect the throne, nearly perishing in the chaos. At the brink of death, Song Xuan miraculously returns and fights alongside Bai Manchuan to quell the rebellion. With no way out, Shen Lingbo takes her own life. Having endured trials of life and death, Bai Manchuan and Song Xuan emerge deeply devoted to one another, finally achieving their hard-earned happiness. With a smile, Song Xuan playfully asks the question that once defined their relationship: "So, my lord—do you finally yield?"