Shen Jin, the notorious daughter of a military family in the capital, marries Xu Yanyu, a handsome, frail man who has no family by his side. She assumes she will be in charge of the household after marriage, so she diligently plays the role of a gentle, virtuous wife and carefully tends to her "sickly husband." But soon after their wedding, Xu Yanyu rises rapidly through the ranks, revealing unfathomable political schemes and ruthless methods. After an unexpected kidnapping, Shen Jin discovers a secret chamber in their residence filled with human bones. What kind of past is concealed by the seemingly weak and innocent man who shares her bed? And the jade hairpin, identical to the one her mother left behind, will bring long-forgotten events from their shared past to light once more.