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.