The film presents the tale of Agnese Ascalone, daughter of prominent miner Vincenzo Ascalone, and takes place in a small town in Sicily. Agnese is seduced by her sister Matilde’s fiancé, and has a tryst with him for which she confesses and tries to repent, only to be discovered by her mother and father.

When Domenico meets Filumena Marturano in Naples during World War II, he is instantly smitten. Flash forward to the postwar years, and the two meet again, sparking a passionate affair that spans two decades. But when Filumena — who has now become Domenico’s kept woman and has secretly borne his children — learns that her lover plans to wed another, she will stop at nothing to hook him into marrying her instead.