The violin genius with an out-of-wire brain, the lonely and unruly trombone prodigal, the unlucky trumpet guy who knows everything in the world but keeps pretending to be stupid, the mean and sinister cellist... It looks like a lively college band, but behind the harmless smile is a profound loneliness, and the sinister and mean character is because of the cruel past. Perfect love can be achieved without kindness, and a happy ending can be achieved without being strong. Youth will feel beautiful only when it has completely passed...