Husband goes on a business trip alone, leaving Machiko to live lonely. Yoshioka, who lives next door to such Machiko, is an overly caring busybody. One day, when Machiko is bedridden with a cold, he brings her food and takes care of her enthusiastically. After recovering, Machiko wants to thank Yoshioka and seduces him provocatively. Losing his reason to Machiko's temptation, they end up having sex, but Yoshioka's overly innocent reaction stimulates Machiko's maternal instincts, so she plots to seduce him again the next day. She lies in wait wearing a see-through skirt, lures him into her home, and enjoys intercourse.
