L'Idea Fissa on AllMovie

Infidelity is the real subject linking the four funny vignettes that comprise this Italian anthology. "The First Night" centers on a naive pair of Sicilian newlyweds honeymooning in Naples. While celebrating their wedding night a friendly millionaire invites them aboard his yacht for a few drinks. There the tycoon offers the groom a fortune in exchange for having sex with his bride. Too drunk to think straight, the groom agrees to the bargain. The next night, he goes to cash the millionaire's check and finds it is no good forcing him to make a difficult decision. In the second story, "One Moment is Enough" an insanely jealous husband's attempts to keep his wife faithful fail miserably. The third story "The Last Card" centers on an unemployed football player who becomes a male prostitute to help support his impoverished family. Unfortunately, he is not quite up to the job. Finally in "Saturday, July 18," a wife spends a month vacationing in Capri. Her husband eventually shows up and begins boasting about how trustworthy she is. Unfortunately for him, she is anything but.