Kawano has an incredible fetish about to be realized. He fantasizes about the AV sexual adventures of his favorite adult star Miss Boin ("boin" meaning the sound a big breast makes in motion -- think "boing!"), little realizing that the school he's about to teach at has a head teacher that he suspects is in private Miss Boin! Even the little mole on her enormous chest is the same, but is it really her? A madcap sexual comedy in which Kawano sets out to score with all the teachers...