A young executive is obsessed with real blondes. He will only later discover that his brown-haired secretary, who has been secretly in love with him, is really a blonde.From a review originally published in "La Saison Cinematographique"

Richard Lemieuvre, the king of French Erotic Cinema, plays...the king of porn...affectionately nicknamed QUEUE DE BETON ("Concrete Cock") in this hilarious parody of what it takes to make a sex film.

Respectable Monsieur Léon, nicely portrayed by Antoine Fontaine, is an unassuming bank teller by day, lover for hire with a specialist sideline in spanking by night!

While shooting an advertising film in Spain, Jean, the director, meets Ines, a passionate Spanish woman who becomes his companion and lover. On the same night of his arrival in San Sebastian, the director is visited by a woman who, recommending herself to him, ends up in his arms.

Pierre has sexual fantasies about his next door neighbor Marianne leading his wife to get him an appointment with a sex therapist. Jean-Louis Vattier dreams about his lovely downstairs neighbor, Brigitte Lahaie, although his dreams occasionally turn into nightmares involving his hard hat co-worker Dominique Aveline. One particularly strange and violent sequence is not made any more watchable by some slow motion fighting accompanied by the usual ‘arousing’ sax music instead of more threatening music, but this entire film is one big incomprehensible trip anyway, so the viewer had better prepare for more far out scenes. Pierre awakes to find his beautiful blond wife (although she’s no Brigitte) played by Ursula White. Obviously their marriage is in trouble, with him living in a fantasy world of his own making while she, Janine, has taken a lover of the same sex (Liliane Lemieuvre as Rosette). Pierre spots Brigitte in a book store and begins to fantasize once more.

In a loop based on the historical example, Arsene Lupin is on the prowl, not only for jewels but also for the beautiful baroness (Brigitte Lahaie). At night the masked man climbs up to her balcony and gets involved in an extended orgy. When activities calm down, Arsene Lupin takes his opportunity and takes on the baroness, before he vanishes back into the night.

This is a documentary on the 70's French porn industry. There are generally two kinds of porn documentaries--those that actually take an insightful look behind the scenes, and those that are just an excuse to show a lot of nudity and XXX porn footage. This is actually somewhere in between. It's generously seasoned with porn footage, but there are also a lot of (fully-clothed) interviews, and they even talk to the owners of porn theaters, some typical porn customers (including some pre-adolescent boys who are walking by the the theater--I wonder what their parents thought of that?), as well as a guy who makes promotional billboards for porn movies although he claims never to have seen one!