A wealthy man suffers from impotence whenever he tries to make love to his wife. Since Viagara hadn't been invented yet, his swinging liberal doctor instead recommends a strong dose of infidelity. Before long he is rolling in the hay with a young lovely and needless to say his impotence problem is cured (it's amazing that he doesn't have a heart attack though). His wife is a little bitter, however, and decides to embark on her own affair. And if you're wondering with whom, well, just look at the title.
Carroll Baker
Adolfo Celi
Cesare Barro
Luigi Pistilli
Gabriella Giorgelli
Dada Gallotti