Dr. Steven Sorenson plans to tap the geothermal energy of the Earth's interior by means of a thermonuclear device detonated deep within the Earth. This experiment causes a crack to form and grow within the Earth's crust, which threatens to split the earth in two if it is not stopped in time.
A team of maritime salvage workers are about to embark on a recovery dive. However the 1883 Krakatoa Volcano eruption provides more pressing problems.
The story of U.S. Army commander George Armstrong Custer, a flamboyant hero of the Civil War who later fought and was exterminated with his entire command by warring Sioux and Cheyenne tribes at the battle of Little Big Horn in 1876.
