The world of classical music is like a microcosm of society, and a young maestra shakes up the most conservative orchestra scene. Referred to as a genius, Cha Se-eum turns her limitations as an Asian woman into her uniqueness. After a stellar career in the United States and Europe, she suddenly decides to return to Korea. Rejecting offers from top orchestras, she joins "The Hangang Philharmonic," an orchestra on the verge of dissolution. However, the orchestra members aren't too happy with her joining as their music director... Se-um tries to protect the orchestra, while another conductor under the veil goes after her. Can Se-um overcome the wounds of her past and uncover the truth behind the events that took place in the orchestra?