Akane is a plain office lady who has lived her life just going with the flow. She manages to get boyfriends, but they never last long; most of the time, she breaks up with them because they cheat. One day, due to a work mistake, her boss orders her to work overtime with her colleague, Kurumi. On the way home, she is aggressively seduced by Kurumi and ends up having a one-night stand. Overconfident, Kurumi continues to pursue her even during work hours. When Hayashi, another colleague, finds out and offers advice, Akane ends up spending a night with him too. However, it is through sex with Hayashi that something awakens within her! She begins to experience an unstoppable surge of pleasure and emotion she's never felt before. What action will Akane take next!?