I can have sex with an S-rank beauty every day! We are the only two young men and women in a workplace full of old men... Since I'm the only one she can meet, a sexually frustrated older sister with amazing proportions invited me. Tsubasa Mai

The movie revolves around Sakamoto, a young man working in a predominantly older male environment, where he catches the attention of his attractive and sexually frustrated coworker, Tsubasa Mai. As they spend more time together, their mutual attraction grows, leading to intimate encounters. The story explores their developing relationship, navigating the challenges of their workplace and personal desires.