Hikari, a married woman in her seventh year of marriage who lives a mediocre life with her mediocre husband. - My husband and wife are happy, but recently my husbands return is often delayed and I have been sexless for three years. - Meanwhile, an exchange begins with Uchimura, a young manual worker who lives next door. - As the distance gets closer, Hikari is attracted to Uchimuras trained body and wild scent, which her husband does not have. - And at dusk when her husband is late for entertainment, Hikari secretly invites her to her home because she couldnt see Uchimura who was in trouble because she lost her key and couldnt enter the house.