Hibiki is frustrated with her husband, who no longer sees her as a woman. Just when she's struggling with marital problems and in a precarious situation, a colleague suddenly confesses his feelings to her. She knows she has to immediately reject him. But even if she gets home now, her husband won't even look at her. So... Hibiki's lonely body begins to ache as her colleague passionately flirts with her. Even though she knows it's wrong, she takes his hand and invites him into her one-room apartment...