A seemingly happy marriage begins to dissolve when the husband's faithfulness is called into question, and both spouses become tempted by other desires.
Fidelity tells a story of marital fidelity, in particular the one of Carlo and Margherita, a young couple who needs to face the deflagrant consequences of an alleged betrayal. Their relationship becomes a symbol of fidelity, not only as a couple, but also in the personal choices made every day.—Netflix