Kang Han Su is a devious lawyer who meticulously plans his lawsuits and exploits the emotions of his clients for personal gain. However, as he unintentionally gains a reputation as a hero and problem solver among the common people, he begins to see the value in seeking true justice. Over time, Kang Han Su matures into a just and ethical lawyer. One of his clients, Yi Yun Ju, initially hires him to seek revenge but ultimately becomes a supporter of his mission to uphold the law and defend the innocent. This transformation reflects Kang Han Su's growth as a legal professional and as a person. ~~ Adapted from the webtoon “Joseon Lawyer” (조선변호사) written by Jeongjae & Shim Gun (정작가&심군).