Yearning to make friends and perform live with a band, lonely and
socially anxious Hitori "Bocchi" Gotou devotes her time to playing the
guitar. On a fateful day, Bocchi meets the outgoing drummer Nijika
Ijichi, who invites her to join Kessoku Band when their guitarist, Ikuyo
Kita, flees before their first show. Soon after, Bocchi meets her final
bandmate—the cool bassist Ryou Yamada.
Although their first performance together is subpar, the girls feel
empowered by their shared love for music, and they are soon rejoined by
Kita. Finding happiness in performing, Bocchi and her bandmates put
their hearts into improving as musicians while making the most of their
fleeting high school days.