Misaki decides to join the Brass Band Club having heard of its prestigious past from her father, a former member. However, Misaki finds that much has changed and the club is now full of dull and inactive students. Misaki determines to do her best to return the club to its glory days, but she must help many of the students overcome their personal problems.

日本超級美少女SPEED舞台新挑戰 浪漫校園青春劇又一新作

　　因正處離婚調停狀態下的父母，遠居美國的關 係，美咪（今井繪理子）從東京搬到橫 須賀和祖母同住，因而轉校到同樣是父親的母校向陽高 中就讀。美咪的夢想就是加入父親曾待 過的吹奏樂隊。但是現在的吹奏樂隊，成員15人，甚至 連校歌都演奏不好。雖然如此，她還 是決定加入，選擇了能夠發聲的橫笛。不久美咪發現了 同班的優希（新垣仁繪）也曾是吹奏樂 隊的成員。但是詢問她退出的理由，她都閉口不談。就 在這時候，如果沒有新成員的加入就決 定廢掉此吹奏樂隊…………………