Director Gaspard Bazin is working on a new feature film. For now, he's still looking at the fundraising and casting stage of the process. He calls upon Jean Almereyda, a once-fashionable producer who is now going through a bad patch, finding it increasingly difficult to raise the capital he needs for his ventures. His wife Eurydice dreams of being a movie star. A perverse game between the two men ensues, with Almereyda wanting to please his wife, but reluctant to demand a role for Eurydice because of Bazin's reputation as an incorrigible seducer.

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.