Yuri, played by Sayuri Hayama, is furious over her husband Takahiro's visits to sex workers. Takahiro's best friend Michikawa steps in to settle their fight, but he has secretly wanted Yuri for years. Once the couple makes up, he suddenly kisses her under the pretense of accepting her thanks. Yuri desperately resists, yet her neglected, voluptuous body yields to the pleasure she has been craving. Guilt toward her unsuspecting husband remains, but the thrill of cheating gradually takes control of her body...