The young wife of a commander in the army is insulted by a fashionable young man. The husband challenges him to a duel, and swords are about to be crossed when a message comes to the elder man that the enemy is advancing. He is forced to take the field, and the duel is postponed. The wife decides to fight her own battle, and sends a challenge to the disturber of domestic peace. The summons is accepted, when, masked, and dressed as a man, she fights with her adversary and overcomes him.