When her son Yuuichi is caught shoplifting by his classmate Hayato, who secretly records the incident, Hayato approaches Ayaka Tomoda—Yuuichi's mother—and blackmails her. He threatens to release the video unless she submits to his sexual demands. Out of concern for her son, Ayaka reluctantly agrees and endures his manipulation. However, despite her initial resistance, she gradually begins to experience unexpected pleasure under his control. As her body awakens to desire, she finds herself increasingly consumed by lust, losing the ability to resist her own growing arousal.