After a night shift, Makoto returns to his apartment and hears a newly arrived couple arguing next door. He wants nothing to do with the neighbors until the wife comes to introduce herself and turns out to be his former girlfriend Haruka, the woman whose body once matched his perfectly. From then on, Makoto comes home just as Haruka sees her husband off each morning. Their repeated encounters reignite old desire, leading to an all-night affair filled with nonstop sex and creampies.