A young husband and wife who live on the Tuscan coast are no longer close in feeling. When she sunbathes topless, he disregards her, somewhat deliberately. Later they drive off and stop at a waterfall where two naked girls are bathing. Then they go to a restaurant where the husband notices an attractive girl, who lives in an ancient tower near them, riding by on her horse. Next day he visits the tower, meets the girl, and they make love. Months pass. The husband is away in Paris. The wife walks on the beach one day, takes off her clothes, dances in the sea, and lies down. The girl comes along, strips, dances in the sea, and, nude, meets the nude wife.