A wealthy man (played by former James Bond villain Adolf Celli) suffers from impotence whenever he tries to make love to his wife (Carroll Baker). Since Viagara hadn't been invented yet, his swinging liberal doctor (Luigi Pistilli) 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.
As comedies go this is not particularly funny (and maybe it wasn't supposed to be given the ending). It certainly delivers as far as sexploitation goes with Carroll Baker and Femi Benussi both doing some very unabashed nude scenes. They really manage to waste one my favorite Italian actresses, Jenny Tamburi, however. She appears only in a ridiculously brief role that doesn't allow her to act (which she does pretty well) or strip off (which she does even better). As other reviewers have said, Luigi Pistilli probably gives the best performance here, playing the libertine doctor who, along with equally promiscuous wife Benussi, eggs on all the infidelities.
Strangely, this is the second Italian sex comedy in a row I've watched that centers around impotence. You would think that subject wouldn't have been much of turn-on to the male audience of that era, but I guess someone found humor in it. I seriously doubt anyone in the male audience suffered from THAT problem with THIS female cast. Still I'm afraid this movie itself is no great shakes.