Two sisters inherit a Belgravian mansion without the income necessary for its upkeep, Lady Mary, a widow, and Lady Lilian. Lady Mary's husband, a Mr. Crabbe, had made the acquaintence of a warm-hearted family of the name of Pidgeon. In due course Mrs. Pidgeon, her daughter Una, and her brother Tom Larcomb, call on the two ladies, with the result that the Pidgeons take up their abode with the aristocratic sisters as paying guests. Mrs. Pidgeon, a blatant person, now very rich, at first dreadfully offends Lady Strawholme, a wealthy grande dame, by producing her check book when it is proposed that her daughter Una should be brought out by the insulted Society magnate. However, these things straighten out astonishingly well within a couple of months. Una, who had been a gauche, clumsy girl, makes a success at Court when presented by Lady Stawholme, and finally pairs off with Lady Mary's son, Tim, who at first glance detested her. Also, the very downright Tom Larcomb makes violent love to the not unresponsive Lady Lilian, and actually sweeps her off her feet. Lady Mary and Mrs. Pidgeon, left to their own devices, plan to go around the world together.