A great provincial lawyer is found murdered with a revolver shot in the red path that leads to his mistress's home. The Advocate General accuses his own wife who was a betrayed mistress and whom he assumes guilty out of spite. But the accused's daughter finds the real culprit.
Philémon, a wealthy dilettante, is going to do his military service in the provinces under the authority of a colonel friend of his father. Lucien, a lieutenant and Jeanne, the colonel's daughter, are secretly in love with each other; but the colonel plans for his daughter a marriage with...