Son is a 29-year-old virgin working at a factory, living alone with his mother. Every day after work, he confides in his mother about his unrequited love for a woman. One day, he gets rejected by her and becomes so depressed that he collapses, bedridden. To cheer him up, the mother takes him to brothels and sets him up on dates with acquaintances, but his spirits don't improve. After much deliberation, the mother gently embraces her son. He buries his face in her breasts and suddenly experiences an intense physical reaction. Her overwhelming affection begins to distort his heart...