A family where the mother openly discusses sex with her son, who has struggled to find a girlfriend even after turning twenty. The mother always communicates frankly, listening carefully to her son's concerns. The son, insecure about his uncircumcised penis, feels anxious about relationships and sex. Seeing his distress, the mother gently peels back the foreskin in the bath and teaches him how to have sex, using her own body in bed. Though in poor health, she is a single mother who has worked hard as a snack bar hostess while raising her son. He deeply respects her, but romantic feelings are beginning to stir. When the mother falls ill, the son tenderly draws close, supporting her emotionally and physically.