Three years ago, Shen Zhaotang's mother died in a fire at the granary. Shen Zhaotang refused to believe it was merely an accident. But because she pursued the truth, her father drove her out of the family home. Three years later, her younger sister marries her former fiancé. With the Shen residence filled with wedding guests, Shen Zhaotang arrives at the door carrying a written debt contract to collect what she is owed. From the silk shop her mother left behind, to the old accounts hidden away, and even the back door that had been nailed shut before the fire started, Shen Zhaotang uncovers a shocking truth: the very people preventing her investigation are the family members she once trusted most. Her guard, Qin Yanhui, stands by her as she braves one dangerous situation after another. Meanwhile, Xie Zhixian, the young heir of a marquis's household who loves to have fun but never shirks his responsibilities, gradually finds his way to her side after a misunderstanding on the street.