In 1867, Sin Jae Hyo leads the Dongrijungsa, which teaches pansori (traditional Korean musical storytelling). A young girl, Chae Seon, who wants to perform pansori, appears in front of him. Chae Seon has dreamed of performing pansori since she first heard Sin Jae Hyo perform when she was little, but Sin Jae Hyo turns her down because women are not allowed to perform pansori. Chae Seon then disguises herself as a man and enters the Dongrijungsa to learn pansori, but Sin Jae Hyo doesn’t accept her as his student. One day, he hears Daewongun, the most powerful man in Joseon and the father of the King, is going to hold a national competition of pansori performers known as “Naksungyeon”. Sin Jae Hyo decides to teach Chae Seon, who has a true voice to perform “Chunhyangga". If anyone finds out that Chae Seon is a woman, Sin Jae Hyo and Chae Seon will both face death.
Because of one simple word from a soothsayer, Pi Ya Nuo has been raised as a boy all her life. By chance, she saves underworld mob boss Du Zi Feng and his sister. His sister falls in love with Pi Ya Nuo at first sight. Things get complicated when she becomes "sworn brothers" with Du Zi Feng, just as her 26th birthday comes closer, and with it, her chance to finally live as a woman. As her 26th birthday approaches, she must decide if she wants to return to a woman or continue to be Du Zi Feng's best pal.
