Hong Gil-dong is an infallible private detective with an exceptional memory and quirky personality. While chasing the only target he failed to find, he gets entangled in a much bigger conspiracy than he bargained for.
A cold-case enthusiast blogger and a washed-up veteran detective team up for a joint investigation to rescue their innocent friend who is framed for murder.
Lee Gong-jin, a young tailor, helps the Queen with her dress and both fall in love with each other. However, his success catches the ire of Jo Dol-seok, the royal tailor, who vows retribution.
