A disillusioned rich American bets with a railroad worker that the latter will not be able to spend the 600,000 francs a month that he will pay him for a year. All the railwayman's attempts to win his bet fail but his daughter luckily conquers the American.
An actor, a great seducer, has a 20-year-old son (François Périer) to whom he gives advice that has always succeeded; however this son has difficulties with Corinne (Dany Robin) who considers herself his fiancée.
After the exodus, a woman with a tidy life decides to take in the abandoned children; she meets a singer who knows how to make her see life with more poetry.
Full of hopes, the young Raymonde leaves her country life in north of France to work in Paris. She promises her first love, François, that she will return to marry him. But their lives take differents paths, even if they never stop loving each other.
