On the eve of the Shen family's downfall, the maid Ye Zhiwei is ordered to leave behind an heir for the heir apparent, Shen Tinglan. After receiving her emancipation papers, she flees the capital in haste. Three years later, she has opened Ning'an Hall in Huizhou and is raising her son, An'er, alone. Shen Tinglan, who has returned from the dead under the assumed identity of Gu Huai and taken up the post of county commandant, begins to suspect the child's parentage because of his resemblance to him. As the two become entangled in successive conspiracies involving poisoning and abduction, they gradually uncover the dark secrets behind County Magistrate Liang and the Bai family, ultimately exposing the Minister of War's plot to frame the Shen family and orchestrate its massacre. Together, they protect their bloodline and risk their lives to clear the Shen family's name.