From the renowned creator of Tarzan and John Carter of Mars comes a tale of adventure among the shattered ruins of European civilization! In 2137 A.D., Jefferson Turck, commander of the aero-submarine Coldwater, accidentally crosses the forbidden 30th meridian, becoming the first American in over 200 years to venture onto European soil, where he is plunged into a wild adventure among the ruins of once-great cities and their now-savage inhabitants.