My sister suffers from congenital nymphomania, specifically the lesbian type. Whenever I let my guard down, she openly seduces and forces sexual acts upon unfamiliar women in broad daylight. Her impulsive behavior shows no signs of stopping, as there's always some woman around. I've been tasked with handling my sister's sexual needs. Every day, from morning till night, sex repeats endlessly. In the midst of this, I may be gradually succumbing to the same nymphomania that afflicts my sister.