Eri Saeki's husband comes home completely drunk with another man helping him into the bedroom. As they put him to bed, the man keeps catching glimpses of Eri's bare legs beneath her tiny skirt. Aroused, he grabs her, pushes her down, and slips under the covers with her while her husband sleeps right beside them. With the constant risk of waking him, Eri stifles her moans as she and the man fuck in the cramped space beneath the bedding. Their bodies press tightly together, and the wet sounds of sex fill the room as slow strokes build into hard thrusts and loud, slapping impacts.