A mysterious car has been spotted on the roads of the United States, racing twice as fast as any racing vehicle. Along the seas off America’s coast, a ship of strange streamlined form can be seen moving without the help of wind, steam, or a kerosene engine—and it slips away from any pursuit. In a lake isolated from the water system, the presence of a submarine has also been observed...
How are all these events connected, and what do they have to do with the mysterious flashes of fire in the impregnable crater of Great-Airy Mountain?..