I inherited my father's business in the countryside, only to find my younger sister, Mami, who I thought was married, has returned home. One summer night, I accidentally witness her masturbating. Memories of toying with her in the past resurface. While I am bewildered, my sexually frustrated sister provocatively attacks me. Stealing glances from the family, suppressing my sighs, I arch my heated body, dripping with sweat. Swallowed by my sister's alluring charm, I greedily devour her with single-minded intensity...