Ex-Princess Etheline, daughter of the exiled king of Mitteleuropia, has been kidnapped during a visit to Tawcester Towers, ancestral seat of the Dukes of Tawcester, and ducal family honour demands that she should be rescued. The Dowager Duchess entrusts the task to her son, the Right Hon. Devereux Lyminster, known universally as 'Blotto'. He is, of course, terribly handsome, honourable and brave, but as sadly deficient in the brains department as his sister 'Twinks' is gifted. So Blotto sets off, accompanied by trusty former batman and chauffeur, Corky Froggett. They drive across many countries to Mitteleuropia, a realm now ruled by a usurper, the ex-king's brother, where they suspect the princess has been taken. Can brave Blotto and loyal Corky rescue Ethelinda, or will they meet their end in the evil clutches of King Vlatislav?