The young Queen of Nlilrania and her consort, Prince Ferdinand, are deeply attached to each other, but a hectic youth in Vienna has left him with a flirtatious disposition. An old flame visits the palace, and the Queen apparently has justification for her jealousy. She orders her husband to remain in his apartments. He retaliates by returning the key of the door between their rooms. After a furious scene he departs for Vienna with the Countess. The Queen secretly follows with her aide-de-camp. in the train they encounter sonic officers, and the Queen not only dances, but at Vienna goes to the Arts Ball, where her husband awaits the Countess. Though masked, he recognizes her, and reconciliation ensues.