Kessoku Band's concert takes place at the same time as a storm, and barely anybody shows up. After a poor first song, Bocchi is determined to save the band.
Forming a band and meeting all kinds of people.... that's something Hitori never expected until this moment. As the drumstick counts them into their first song, the four members of Kessoku Band kick off their performance in the school festival.
Bocchi has a tough decision to make after it is announced that student bands may play in the upcoming culture festival. Little does she know that the decision has already been made for her.
Introverted Bocchi takes up the guitar in hopes of meeting friends, but her social anxiety is not so easily conquered. One day, a chance encounter leads her to join an indie rock band.