LEE Hwawon

Kang Eun-kyung, who has come for her teaching practicum, encounters members of the Black Sky black magic club, who are ranked first in the national mock exams. She discovers that there is a witch behind the girls. To retrieve the souls that the witch has taken, she opens the door to the world of darkness.

Despite her aspirations to become a pianist, Suhyun, a high school senior, constantly falls short compared to her peer, Yujin. In order to get accepted into her dream music college, Suhyun seeks a private lesson from Yujin's piano tutor. However, the tutor tells her to abandon the audition piece she's spent months preparing and undermines her self-esteem, causing her doubts about him to grow.