Gu Deok I tries to find out the culprit who actually killed Baek Yi. The new magistrate launches an investigation, trying to limit Yu Hyang So’s powers. Yun Gyeom advises Gu Deok I to become a legal advocate herself to defend Mak Sim who was arrested by the officers for falsely accusing a noble family. Meanwhile, the king orders unmarried noble men and women to wed, forcing Yun Gyeom to marry a woman he doesn’t want.