Mina, a housewife in her second year of marriage. Living with a gentle, hard-working husband. The only complaint is that the simple husband has become less active in marital life at night. In the next room of the same apartment, a middle-aged man named Ikeda, a quiet, taciturn and stubborn craftsman, lived. A neighbor man always greeted me but just bluntly turned back. However, Mina was disappointed, her crotch was drenched from the smell of male sweat that he secreted. And one day …!