Le délégué syndical Basletti est l'heureux époux de la belle Vincenzina dont il a également un enfant. Mais il va se laisser ronger par la jalousie et ruiner son couple...
After a few years in a boarding school for nuns, young and provocative Monica returns to the village, eager to win as many children as possible. All men lose their heads for her. Later her sister, Sabina who runs a pharmacy arrives with her new husband and she can't manage to keep her hands off her new brother-in-law. It succeeds so well that it reduces the entire local soccer team to its knees.