The Daredevil

Roberta is the child of an American soldier and a French marquise. Following her father's death in the Great War, she travels to the New York home of his family, the place where he grew up. There she finds that her uncle, a man who dislikes women, has mixed up her gender and that of her younger brother Pierre, who has a physical disability. To win her uncle's approval and secure medical care for Pierre, she takes on the identity of "Robert," the uncle's nephew.

With this new name, she turns to helping France by obtaining supplies for the war effort. Her disguise leads her into a run of comic near misses, and along the way she falls in love with the Governor.