It's now fall and the brass band club has grown. Haruta, Chika, and Miyoko stumble upon Sei Maren, a former saxophonist, at the drama club. The brass band club and the drama club engage in dramatic battle to help Sei come to terms with his past.

It's spring break and the clubs are on the prowl for new members as students get ready to enter high school. During the break, there's been a tresspasser in the music room. Can the brass band club members figure out what she's been doing there?