While escaping from the theatre, Floridor and Denise were intercepted by a patrol and taken to the barracks. They are recognized by the officers. They join the little party that is being given in honour of Fernand who is going Paris to get married. Fernand, who fell in love with Nitouche, decided to give up his marriage to Denise, whom he does not realise is actually the same person. On her side Denise loves Fernand. They do not have time to admit their mutual love, for the Major arrives in a fury, and interrupts the party.