Monsieur Serval has made a deal with his daughter Jacqueline. She can be a lawyer and act her own way provided that, in a given period of time, she becomes a great name of the profession. If she does not, she must pledge herself to marry the son of a rich man, Monsieur Feutrier. Jacqueline accepts and starts her career by defending Pierre Besnard, a bad Boy. Not only does she get the case dismissed but she falls in love with Pierre as well. But she is not famous for all that and sooner or later she will have to bring herself to marry Feutrier's son.

Une jeune avocate se refuse au mariage. Devant sa décision, sa famille l'autorise à un essai de vie de célibataire de quelques mois. Sans lui dire, son père lui amène comme client un aimable escroc à la cause duquel elle se consacre désespérément et auquel elle finit par s'attacher...