The Tale of Nokdu

Jeon Nok Du lives on an island with his father and older brother.
One day, his father and older brother are attacked by a group of female assassins. Nok Du chases after one of the assassins to the capital that goes into a widow village. To find out who and why his family was attacked, Nok Du disguises himself as a woman and enters the widow village. There, he meets Dong Dong Ju, an apprentice to become a gisaeng.