Ayumi, a beautiful high school teacher, is the object of admiration for her male students. However, one of them finds out that she works as a model on the side. Ayumi is forced to wear the same high-cut swimsuit she wore in her modeling photos in the classroom. With the obscene outfit digging into her crotch, she is subjected to a humiliating public sex lesson while the whole class watches. "Quiet... please be quiet" "There's no way I can be quiet, teacher." The students' desires grow day by day...