A famous radio announcer is being retired at the top of his career and in full professional maturity. But for him and his wife life is not over now, he has more plans.
Giordano is a young man from Milan who accepts a ride from a trio of Americans (an "open" couple and a homosexual) sightseeing in Italy. The husband is an older and worldly professor of archaeology while his wife is interested in exploring living things. The young hitchhiker is seduced by the beautiful wife, while her husband continues to gaze at ancient ruins.
Two Milanese girls meet in a toilet where a distracted bourgeois forgets a valuable ring. They take it and go in search of someone to sell it to, helped by a southern taxi driver.
