Riasu Mizutani, an English teacher, is secretly dating a colleague. One day, a new principal arrives at her school. At first glance, he seems kind and capable, but he is actually an extreme pantyhose fetishist. The principal catches Riasu making out with her boyfriend in an empty part of the school and blackmails her with photos. Yielding to his threats, Riasu succumbs to the perverted pantyhose sex brought by the principal's fetish, gradually losing her mind to the unknown taboo pleasure.
