Mion Sonoda works in the general affairs department of an underwear manufacturer. Highly ambitious, she demonstrates her capabilities and finally achieves her goal of transferring to the product development department, where she is selected as a project member for the "New Underwear Presentation." Up until now, she has been targeted for sexual harassment by clients, seniors, and bosses, reluctantly accepting forced sexual acts that bordered on violation just to get promoted... but an even greater ordeal awaits her. As she continues to endure the humiliation and shame of this black company... will she eventually find pleasure in it?