The story of the wicked lawyer Kang Han Su, who files lawsuits that are previously planned and uses the feelings of wronged victims to his advantage, as he unintentionally becomes revered as a hero and a problem solver among the common people. Eventually, he matures to become a truly just lawyer. Kang Han Su is a skilled Joseon-era lawyer. Kang Han Su defends and completes the law in order to revenge, but eventually becomes the people's spokesperson and hero. Yi Yun Ju is a person who commissions a case in order to exact revenge. Adapted from the webtoon “Joseon Lawyer” (조선변호사) written by Jeongjae & Shim Gun (정작가&심군).