Marcello, a shy tenor, is afraid of singing in public. Two friends of his think of having an elegant youth on the stage pretending to be singing while Marcello dubs him behind the scenes. The scam is successful but after a while Marcello summons the courage to go on stage himself.

"Tu seras duchesse!" ("You'll Be a Duchess!") With these words, self-made industrialist Poisson orders his daughter Lucie to marry a wealthy Duke. The duke's father objects to the union, whereupon Poisson arranges another marriage for his daughter, this time to an impoverished and sickly young marquis. Poisson's strategy runs something like this: the Marquis is expected to die soon, whereupon the widowed Lucie will become a marquess, and thus a worthy bride for the Duke. But the Marquis foils these plans by staging a miraculous recovery. The explanation? The Marquis and Lucie have been in love all along, and this was the only way that they could wed with Poisson's blessing. Darned clever, these Frenchmen!.

The colonel must marry the baroness of Flair, as soon as the girl this one will have found a match. A friend of the colonel proposes his nephew: a count with a degilded coat of arms. Private Leneveu presents himself to the baroness, who takes him for the suitor, whereas he is the colonel's driver. Gaffes and misunderstandings. The arrival of the true nephew restores the situation. Leneveu goes to the police station.

Octave Laburette only makes blunders in his job with a backroom worker. He buys ten thousand shares of the Compagnie Générale des Cacahuètes, when the client wanted to sell them. His boss registers them on his own account: Octave then owes the agency sixty thousand francs and his wife informs him that she is joining her lover.

A young reveler, heavily in debt, finds a job in Pondicherry, but he must be married, and he has only twenty-four hours to do so. After an evening of revelry, he finds himself locked in with his friend's fiancée, leading to a marriage made possible by a miraculous inheritance.

Prince Philippe of Bracowa must join his fiancée by train. The young and pretty Gisèle is on the same train, for her too to join her fiancé.

The singer Saltore is accused of the murder of his wife's lover, and is sentenced to ten years' hard labour. His daughter proves his innocence when she discovers the culprit to be his wife, who wanted to end an embarrassing love affair.

A young aristocrat whose ruined father decided to marry her spends one last night as a bachelor at the boarding school ball. But there, cheerful students strip her of her clothes and she finds refuge precisely with her future husband whom she did not know. Of course, the marriage that was so repugnant to them fills them with joy.