Eun-jo is the true identity behind Gil-dong, the legendary righteous bandit who robs corrupt officials and redistributes their wealth to the people. Born as the illegitimate daughter of Minister Hong and raised in the lowest social class, Eun-jo lives in a Joseon society where no one would ever suspect a woman of being a notorious outlaw. Behind this prejudice, she carefully maintains a flawless double life. Meanwhile, Yi Yeol—the prince assigned to capture Gil-dong—falls in love with Eun-jo at first sight and begins to pursue her, completely unaware that the woman he loves is the very thief he is hunting.This is a sweeping and dangerous romance: a woman who unintentionally becomes Joseon's greatest thief and a prince bound by duty find their fates intertwined. When their souls are mysteriously exchanged, they embark on a journey to save each other—and ultimately, to protect the people.