On the day of the wedding at Jing'an Marquis Manor, heir Shen Jingchuan insists on taking the street singer Liu Ningshuang as his equal wife, publicly barring Pei Lingyi—the legitimate daughter of the Duke of Zhenguo—at the gate and humiliating her. In a fury, the Marchioness strips him of his title. Just then, the second son, Shen Wenzheng—who has spent eight years guarding the frontier and returns covered in battle honors—is named heir in his place and weds Pei Lingyi. Betrayed by Liu Ningshuang, Shen Jingchuan sees the truth at last and joins the army, winning merit in battle. Shen Wenzheng and Pei Lingyi fall in love after marriage, and the Marquis Manor at last finds harmony and wholeness.