Ulderico Quario finds himself captivated by the stunning Teresa, who he hires as his servant. Determined to transform her into a refined lady, he takes on the role of a modern-day Pygmalion. Ulderico begins tutoring Teresa in the art of seduction. However, little does he know that Teresa, along with her accomplice Cecchina, has ulterior motives. Together, they devise a cunning plan to manipulate Ulderico into marrying her and ultimately gaining access to his entire inheritance. As their seductive schemes unfold, they soon realize that fate cannot be easily swayed by their deceitful tactics.