Things are finally getting serious for Hitori 'Bocchi' Gotoh and the rest of Kessoku Band. To celebrate the release of their first album, Stray Beat plans to hold the gang's biggest show yet alongside Klimt's Night-a hit musical duo from the same label who pack some real star power! In preparation, they're introduced to the group's reclusive songwriter, who has even worse social anxiety than Bocchi?!