A secret royal inspector works as an undercover official who inspects local provinces to expose corruption. He teams up with a lady who is searching for happiness by getting divorced with her current husband. The duo then go on a grand scheme to discover the truth and find corruptions. Ra Yi Eon wanted to open a dumpling store outside the capital. However, due to his cleverness, he passes the state examination and becomes an official in the Office of Special Advisors. There, he finds himself receiving secret orders to carry out missions as a secret inspector. Kim Jo Yi is an unorthodox lady in the Joseon era who dislikes the notion of woman suffering in silence during marriage and is wholeheartedly in support of a divorce. She is passionate and is always ahead of time.