Tiny Fox-Collier and her son, Tony, are in financial distress. Tony, a cheerful and handsome young man about town, is well aware that he can count on his mother for a stroke of genius that will save them from total poverty. This she has: a visit to her former flame Sir Richard Furze's Irish country estate, where he is now a prosperous widower with two daughters. While Tiny is adamant that her son marry the lovely but aristocratic Joan, Tony appears to have his sights set on Joan's vivacious younger sister, Baby.