Bertie is back in New York and enamoured of portrait painter Gwladys Pendlebury but Aunt Agatha is not enamoured of the painting of her Bertie commissioned and she is even more annoyed when her wayward twin sons, charged to Bertie's care before being shipped off for colonial posts, give him the slip to pursue a cabaret singer. Tuppy Glossop arrives to sell his family recipe for cock-a-leekie to soup magnate Slingsby to finance his nuptials to Elizabeth but slimy ad man Lucius Pim steals Gwladys from Bertie and makes Aunt Agatha the unwitting face of Slingsby's soups on every billboard in New York.
