[DeepL Translation - needs review] Aki, a former brass band member and current homecoming club member, is asked by her homeroom teacher, Hirano, to teach brass band to some students. Hirano takes her to the old auditorium, where all the unwanted things of the school are gathered. Waiting for her are a group of yankee boys who are known as "yankee" in the school. Aki is intimidated by them, but their enthusiasm for music, even though they are not very good at it, draws her in, and she decides...
