Hitomi, a fitness instructor working at a gym in Tokyo, carries a painful past—she was forced to resign from her previous club after taking responsibility for an accident that occurred there. The incident left deep emotional scars that still haunt her. Now, at her current workplace, she unexpectedly reunites with a former member. This man begins to subject her to shameless, lewd commands that torment her mind, yet her sensitive body betrays her by responding involuntarily. Caught between guilt from her past and inner turmoil in the present, Hitomi struggles to protect herself while confronting the unwanted physical reactions he provokes.