The Lost Continent: A Quick Read edition

Beyond Thirty is a science fiction novel by Edgar Rice Burroughs, first published in 1916. The story is set in the year 2137, where the western hemisphere has severed contact with the rest of the world, and the eastern hemisphere has exhausted itself in war and descended into barbarism. The protagonist, Lieutenant Jefferson Turck, is commander of the aero-submarine Coldwater, which becomes stranded in the forbidden England.
Turck and his companions find England a wilderness inhabited by savages and overrun by lions descended from zoo animals. They rescue Victory, daughter of the king, from the henchmen of Buckingham, a local strongman who has killed her father. Turck and Victory join the other Americans, and the combined party sails to the European mainland, also reduced to savagery. Turck and Victory fall separately into the hands of soldiers of the Abyssinian Empire, a black super-state now ruling all of Africa, most of Europe, and the Arabian Peninsula.
Turck rescues Victory during an attack on New Gondar by the forces of China, which have been advancing into Europe from the east. The couple is captured by the invaders, but made honored guests once the Chinese have heard their story. The copyright for this story has expired in the United States and, thus, now resides in the public domain there. Discover a new way to read classics with Quick Read. This Quick Read edition includes both the full text and a summary for each chapter. - Reading time of the complete text: about 3 hours - Reading time of the summarized text: 6 minutes