Wally Walrus conducts the school band's performance of Franz von Suppé's 'Morning, Noon, and Night in Vienna' overture.

　　炎热的暑假，女生们还要在学校补课，早就坐不住的她们自动请缨去送午餐给为棒球队打气的管乐队。一路上嘻嘻哈哈的她们快到终点才发现因为天气炎热饭盒早就变坏了，而管乐队队员毫不知情地吃下去，随之而来的身体不适让而唯一没有吃饭盒的中村要求女生们负责，组成爵士乐团。可是女生们不懂得演奏乐器。

　　艰苦的训练开始了，可是痛苦中也带着甜蜜。

A fiendish conductor takes over a school band. She eliminates five musicians who then form their own ensemble. With the help of their former conductor, the new band enters The Norwegian Championship against their old band.

The wild shall remain wild.