The big-breasted wife 'Sana' of his younger brother who moved in is peeped at every day by her perverted, unemployed brother-in-law. On a hot and sleepless summer night, he can't hold back his excitement at the sight of her sweaty sleeping figure and finally assaults her while she's asleep. Although she tries to resist, her brother-in-law, unable to control his lust, relentlessly pistons into her with his powerful dick, causing her to drown in unfamiliar pleasure, eventually leading her to seek him out herself...
