Naho, a wife who has a good relationship with her husband and feels the happiness of being loved every day. However, her calm daily life is shattered by her husband's boss, Shimamura, who suddenly visits her. Shimamura tells Naho about her husband, Yasuaki's dishonesty, and pushes her to do as she pleases... Since then, during the daytime when her husband is not around, Shimamura continues to play with her body. Feeling the limit of being blamed every day, Naho makes up her mind and finally tells Yasuaki everything...