Based on Haruko Kashiwagi's popular comic, the film traces a group of high-school kids as they try to revive the school's shabby brass band, and also attempt to discover the reasons behind one of the members' weird habit: Yuriko Seryu (Beni Arashiro) goes sexually wild whenever she hears good music, and mauls the boys around her.
Twelve year old tennis prodigy, Ryoma Echizen attends the distinguished school of Seishun Academy Middle School with his eyes set on being on the regulars team of the tennis club, which the school is famous for.