After the ensemble contest, Kitauji High School"s concert band now sets its sights on securing a gold medal at the national championships. For third‑year president Kumiko Oumae and her teammates, this is their opportunity before graduation. With excitement and nervousness, Kumiko doubts whether she can steer the group to victory.
While grappling with these concerns, Kumiko meets Mayu Kuroe, a transfer student. With her calm presence and exceptional euphonium playing, Mayu had previously joined Seira Girls" School"s concert band—a frequent competitor at nationals. Though friendly, Kumiko feels an inexplicable spark whenever they cross paths.
As new members join and strategies take shape, the band"s pursuit of a gold medal forces them to discover what truly propels a group toward national triumph. Their journey becomes a testament to dedication, unity, and the drive that defines great champions.
