Student teacher Kang Eun-kyung encounters a group of girls in a black magic club who are topping the national mock exams.
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.
'Princess Mimi' and 'King of Penis' plan to die together. But their wish for a painless death is soon disrupted by a series of unexpected events.
Lee Gyeong, alienated from society, finds a mirror connecting to the different world in a suspicious container while delivering.