 Mlle de Maupin, an Hungarian young woman, escapes from her country under the guise of a monk. A strict army officer forces Theodore the  monk , to enlist in the King s army, for the times are of war, and not even the religious robe is an insurance against it. Theodore is assigned to be aide-de-camp to Alcibiade, a man as virile in combat, as he seems troubled for the figure of his aid... D Albert, another officer, will expose Theodore s true sex, and after a number of confusing, comedy situations, Alcibiade will appease his troubled feelings.