The Misuzu which is Teacher of the private institution star chromatology garden is a popular person of the students in Karen, education ardor in Pure. An annual school festival, a practice officer of "the apology Star Festival" would be left, and worked hard at preparations. However, Misuzu had one anxiety. Group H which is described as "a dropout." Be because the results were disliked with Campus last place, "H "H of the Hentai" of the rubbish heap". Try hard that the Misuzu is participation of the school festivals and rehabilitates such Group H, but students plan the entertainment that is indecent to play with a feeling of the Misuzu….