It is pig stealing time in Shropshire. After winning the Fat Pig competition for two years in a row with Empress of Blandings, Lord Emsworth's ascendancy at the Agricultural Show is threathened by Sir Gregory Parsloe's new sow, Queen of Matchingham. Always keen to help, Lord Emsworth's brother Galahad plots the theft of the Parsloe pig. In retaliation, Sir Gregory's pigman, George Cyril Wellbeloved, snaffles the Empress. While these momentous events are under way, a romantic comedy unfolds at Blandings Castle whither Jerry Vail her pursued Penny Donaldson. But Penny is engaged to Orlo Vosper who pines for Gloria Salt who is engaged to Sir Gregory who rediscovers Maudje Stubbs who has charmed Lord Emsworth, who is Jerry's employer.
