The school festival is coming up, and the Busters get a client request to form a band! Rehearsals are underway when Mogari is suddenly dragged back to Mount Shishikuno and forced to go through a grueling trial to best his bloodthirsty instructor. Tensions rise as Zaki, Koreshiki, and Tamon are left in distress about the fate of their friend… Will all four Phantom Busters be able to stand on stage together?!
