Laura (Monica Vitti) and Giovanni (Jean-Luc Bideau) are a Roman couple who have been married for twenty years. Their life follows the same routine every day, until Laura begins to suspect her husband of having an extramarital affair. During the night, Giovanni mutters a woman's name in his sleep; he also comes home late in the evening, but his wife learns that the company he works for does not require overtime. Following Giovanni to their villa in
Torvaianica, Laura discovers that her rival is just a figment of her depressed husband's imagination. Giovanni is admitted to a nursing home, but his imaginary lover shows no sign of disappearing. Laura goes to visit him, realizing that it is useless to contradict crazy people. By indulging her husband's hallucination, she will patiently win him back. ==Cast==