Bill Oakshott is in love with his cousin, Hermione. Hermione's father, Bill's uncle, is the fearsome Sir Aylmer Bostok, who has taken up residence in what should be Bill's home and refuses to be shifted. Bill needs to get the girl of his dreams and wrest control of his home from his uncle. This is easier said than done, as Hermione is now engaged to Reginald "Pongo" Twistleton. Pongo had been engaged to an American sculptress, Sally Painter, but they parted after Pongo refused to smuggle Sally's friend's jewellery into America.
Who better to help than Frederick Altamont Cornwallis, fifth Earl of Ickenham, `one of the hottest earls that ever donned a coronet', better known to Pongo as Uncle Fred, now at leisure to spread sweetness and light as only he knows how as his disapproving wife, Jane, Lady Ickenham, is en route for the West Indies. Cue a visit to Bill's country home, where Uncle Fred can spin his usual schemes of disguise and impersonation.
This, the second novel to feature Uncle Fred, is another superb farce in the great Wodehouse tradition.