Things are finally getting serious for Hitori "Bocchi" Gotoh and the rest of Kessoku Band. Nijika and Ryou are graduating, Bocchi is finding she's not quite so alone in class anymore, and Stray Beat is planning to celebrate the release of the gang's first album with their biggest show yet! What's more, they'll be joined in concert by Klimt's Night-a hit musical duo who pack some real star power. In preparation, Kessoku Band is introduced to the group's reclusive songwriter, who's...an even bigger introvert than Bocchi? Can they really make a successful indie debut while juggling two black holes of social anxiety?!