Haruka, a single mother, lived alone with her son. As her son entered college and began receiving less attention, Haruka grew emotionally and physically lonely. One day, due to dormitory renovations, she agreed to let her son's friends stay at her house. However, one of the young men caught her secretly masturbating and began blackmailing her. The youths' desires spiral out of control, and though Haruka resists at first, she gradually rediscovers the pleasure of being a woman—pleasures she had nearly forgotten.