The movie tells the story of a fortunate young man living with his wife and promiscuous older sister in a house in the suburbs. Their lives are turned upside down with the arrival of the sister. Men are indeed always swayed by the beauty and body of a woman, and the sister's huge breasts and angelic face are constantly highlighted in the film. Through intentional displays to seduce and entice, she easily satisfies her desires as the younger brother is captivated by her physical beauty. The illicit relationship between the husband and sister progresses, but only in secret and furtive actions. Sometimes, they even dare to come up with plans and schemes to fulfill their burning desires within the innocence of the poor younger sister.