In Regency England, an exotically-dressed woman is found in the fields, speaking a language no-one can understand. She ends up at the home of the Worrall family, the local gentry. Their Greek butler, Frixos, thinks the woman is a fraud from the start. Mr. Worrall sends her to the magistrate to be tried for vagrancy, but Mrs. Worrall agrees to care for her. Mr. Gutch, a local printer and newspaper reporter, takes an interest in the case, especially after the woman claims via mime to be Princess Caraboo.