Four erotic tales from various historical eras. The first, 'The Tide', is set in the present day, and concerns a student and his young female cousin stranded on the beach by the tide, secluded from prying eyes. 'Therese Philosophe' is set in the nineteenth century, and concerns a girl being locked in her bedroom, where she contemplates the erotic potential of the objects contained within it. 'Erzsebet Bathory' is a portrait of the sixteenth-century countess who allegedly bathed in the blood of virgins, while 'Lucrezia Borgia' concerns an incestuous fifteenth-century orgy involving Lucrezia, her brother, and her father the Pope.

Two bank robbers, an old and a young, escape from prison to get to the hidden loot.

Doctor Valois has invented the "flashage", a cure for depressed people. After having tested it on monkeys, he tries with a first human patient, Alain Durieux. This is great success, everybody's happy except may be Alain's wife, Jeanne, who's worrying about the changes in Alain's personality. Other patients use the treatment with similar successes, and Valois's happy about it. But the monkeys are changing: non-cured ones are made mad by the over-stability and stereotyped behaviour of the cured ones. So are the humans. When Valois realises he can't stop the process, he decides to "flash" himself.