Five years passed since the case with serial killer Lee Young-do took place.
Ha-young, who turned 16 years old, has been trying to overcome her trauma. But even with continued effort of psychological counselling, she still is passing a confusing time.
Pushed to be sensitive, by reaching adolescence and unexpected relocation, Ha-young gets stimulated by the violence taking place in her new school.
As her inner shadow grows, what choice will Ha-young make after facing it?