"It hurts. It hurts so much. Am I the reason that this has happened? Why did this happen to me?" - After becoming a target of bullying by her old group of friends, Ki-Joo begins to feel lonely and unhappy. Every day, she tried to suppress it, and convinced herself to forget about it, however even a animal has their own breaking points. She decides to take her own life, but it doesn't work. Instead, she wakes up as Kang Seol-Hee, a girl who has everything.