About the title
Together with his parents and his beloved older brother Yu-seok, 21-year-old Jin-seok moves into a new house. The previous owner left his belongings in one room, and their father tells the sons not to enter it, but Jin-seok keeps hearing strange sounds coming from inside. The young man is studying for exams and taking pills, so the family assumes he's just imagining things. One day, Yu-seok is kidnapped right before his younger brother's eyes. He returns 19 days later, remembering nothing about his disappearance, and seems to his brother to be a slightly different person.