Akari, a lesbian girl, harbors a twisted crush on a fellow member of her university circle, Mao. On the train to campus, she makes an unexpected advance, throwing her target into confusion. The chaos escalates during a group retreat at a campsite, where the innocent girl is stripped completely naked. The thrill of public exposure drenches her in shame and arousal. Her increasingly sensitive body is overwhelmed by lesbian caresses, driving her reason to the edge. Eventually, they fall into a forbidden relationship unknown to their peers.