A father hires his friend's wife, Marina, as a tutor for his son who is not good at studying. The son of the acquaintance has high hopes for Marina, who is beautiful and well-educated, but he falls in love at first sight with Marina's big breasts and glasses, and tries to play with Marina's body in every way possible, ignoring his studies. Unable to bear the sight of his acquaintance's son not concentrating on his studies, Marina tries to improve his academic performance by offering him erotic lessons as bait...