Inspired by what she saw on TV, Kiyoka, a mother, decides to get her son to teach her martial arts. Worried about his mother, the son plots to use harsh ground techniques to dampen her interest in martial arts. As the son had hoped, he succeeds in discouraging his mother, but the sight of his mother covered in sweat as she presses against him unexpectedly shakes his senses. He tries to get away from her, but an unexpected accident causes the mother to end up on top of the son. By the time the mother gets away, it's too late and the son's patience has reached its limit...