黄前久美子升上高三，并在已经超过90名成员的北宇治高中吹奏乐社中成为了社长。高三生们为了自己这最后一次吹奏乐比赛，开始了努力的练习。他们是否能得到梦寐以求的“全国赛金奖”呢？这是成为社长的久美子，高中生活最后的炽热青春！

A parody series featuring the entire cast of The Melancholy of Haruhi Suzumiya in a smaller form factor. Among the changes are: Yuki plays eroge, Haruhi is even more obnoxiuous and loud, Mikuru is even more emotional and Koizumi harbors a deep love for Kyon. Kyon, on the other hand, is generally the same as ever.

I thought that when I entered high school, my days of believing in aliens, time travelers and ESPers were going to be over. That is, until she introduced herself. Claiming to be interested in only aliens, time travelers, and ESPers, Haruhi Suzumiya was the strangest girl I've met in a long time... Before I knew what's going on, I've been dragged into her weird club, and it looks like I'm not the only one who has been drafted into this "SOS Brigade" of hers, because there are three other students who don't seem to be so ordinary themselves.