Harin, a 17-year-old girl, is majoring in violin at an art high school in Seoul. One day, she went to see a doctor with pain in her left arm and finger, and heard from the doctor it might be... there was a problem with the central nervous system. After that, she has diagnosed Multiple Sclerosis. She struggled with the early stage of MS such as sensory impairment, decreased vision, nervousness, and depression, and gradually has difficulty in daily life and playing the violin.