A lonely housewife begins an affair with a man in her tenement building.
Yuri is a high school girl curious about sex but unfortunately she gets involved with a scam artist who hustles men for money after enticing them to grope her on the subway.
Yumiko lives with her son and former boxer Keigo, and is on good terms with her neighbor Ryoko. Ryoko is having an affair with aspiring novelist Mukai, but it seems to be approved by her husband. One day, by chance, Yumiko and Mukai start a relationship...
