Described in the introduction as a manuscript sent to the author in Geneva, Switzerland, by a Viscount Householder in gratitude for the author's having saved the Viscount's beautiful wife from accidental death, this novel uses the framework of a south-polar voyage to two unknown countries, Leaphigh [markedly similar in its institutions to England] and Leaplow [singularly like the United States in its principles and practices], to satirize the social, political, and judicial systems of the two Western countries. The "voyage" appears to have been imaginary, the product of the manuscript writer's delirium during an illness in Paris, but the points made are indelible ones. The first-person narrative device [in the voice of John Goldencalf, Viscount of Householder] adds verisimilitude to the account.