Satoshi, a 17-year-old orphan, finds solace in an old, worn-out guitar, using music to survive his lonely life on the streets. One evening, he meets Sakiko, a girl who understands his struggles and shares in his passion. As they grow closer, Satoshi discovers that true harmony lies not only in his music but in the courage to embrace love. Guided by a mysterious mentor, he learns that some connections are worth risking everything for.