"Beatriz loves music. More than her school, more than her friends, and definitely more than her homework. After Beatriz discovers that her grandfather's soul is trapped in his guitar, she becomes determined to get him out. But the only way to free him is to play the perfect song...his perfect song, a song that he never actually wrote down. Fixated on freeing her grandfather, music slowly consumes Beatriz's life. She soon finds herself growing obsessed...

Hitori "Bocchi" Gotoh once played guitar in solitude, but ever since Nijika roped her into joining Kessoku Band, she's started to emerge from her shell...kinda. She may still be a nervous wreck, but with a show or two under her belt, a part-time job, and even some real-life friends, those rocker fantasies don't seem so unrealistic anymore! However, the band's about to face its biggest challenge yet-performing onstage at the school festival! Can Bocchi...

Scout joins her middle school's band in order to go on the band's annual trip and meet her favorite author, but she is forced to face the music when the trombone section leader realizes Scout does not know how to play.