Takashi, the son, has become a recluse. His mother, Chisato, does everything she can to help, but the situation does not change. One day, Chisato finds a piece of paper in front of his room that says "Buy me some porn magazines." In order to teach him the pleasures of a real woman, she starts masturbating in a voice that Takashi can hear. Excited by the voice, Takashi opens the door to his room...