Mako lives alone because her husband has been transferred away from home. Yoshioka, who lives next door to Mako, is a busybody who never stops caring for her. One day, when Mako is bedridden with a cold, Yoshioka brings her food and takes good care of her. When Mako recovers, she seductively approaches Yoshioka to thank him. She loses her reason to Mako's seduction and, carried away by the force, they make love, but Yoshioka's innocent reaction arouses her maternal instincts, and she plans to seduce him again the next day. She ambushes him in a see-through skirt, brings him to her house and enjoys sex with him.