Seong-ho is a musician with an autistic disorder who has an extraordinary talent in music. But he is trapped in the world of video games and television. His mother has chosen the life of his shadow to groom him into a professional musician. Her only wish is to 'Live an hour longer than Seong-ho.' She would like to leave Seong-ho to his little brother Geon-gi, but he still considers his brother 'bothersome and useless'. Two brothers go on a trip to Europe without their mother for the first time. "It's a practice for when mom isn't here." This family's cacophony is slowly forming a concerto.