The fifty-year-old mother was always worried about her introverted and reclusive son. One day, her son, who rarely goes out, says he's going out. While her son is away, the fifty-year-old mother, driven by her growing lust, engages in masturbation. Her son, who has an abnormal love for his mother, was secretly filming her. The fifty-year-old mother is surprised by her son's actions, but her strong and distorted motherhood accepts his actions and leads herself to intercourse, exposing her naked body.