August 1939. The fate of four young people, Ramona, Georges, Brigitte and Hans is upset by the outbreak of war.

Paul and Sarah form a happy couple with no problems. But when Sarah sees Paul wrapped in the arms of a young woman her peaceful happiness collapses. She in turn takes a lover. Paul realizes that he's losing his wife and proposes a second honeymoon in Morocco...

In a deliberately erratic and disjointed fashion, this film follows the adventures of Bernard (Jean-Pierre Leaud). A young man from the provinces, he makes his pilgrimage to Paris and seeks adventure while living on a barge.