For ten years, Shen Zhaoning managed Xie Yanci's household and raised funds for his military needs. Only on the day she applied for an imperial noblewoman's title did she discover that their marriage contract was invalid and that the position of legitimate wife had long belonged to her widowed sister-in-law, Liu Ruojun. Resolutely leaving the Marquis's residence, she cuts off the private accounts that have been funding the household and demands repayment of its enormous debts. Liu Ruojun uses the Empress Dowager to exert pressure, while Xie Yanci submits an impeachment memorial against Shen Zhaoning. Armed with military supply ledgers and secret letters, Shen Zhaoning gradually exposes the truth, bringing the people behind the scheme to justice and finally securing official recognition for her ten years of contributions. After their divorce, she takes back control of her business and her life—but why does the final page of that secret letter bear her name?