The story takes place in a music and art academy where talented people abound. Zheng Yu (Kim Jung-wook), who studies cello, has a talent higher than that of ordinary people and is extremely strict about everything related to music. Ming Zhen (Lim Ji-kyu) is Zheng Yu's good friend. Unlike Zheng Yu, Ming Zhen has mediocre talent, but he impresses teachers and audiences with his hard work and enthusiasm in his studies. In addition, the two also have a common friend, Ji Eun (Seo Hyun-jeong). The music conference is about to begin. In this grand event of the music industry, both performers and audiences are eager to try. However, at this juncture, Ji Eun discovered that the music score "Witchcraft" that she had spent a lot of effort to create was missing, and Zheng Yu and Ming Zhen fell into a whirlpool of love and friendship.