During the maiden expedition of the submarine S.S. Seaview to the arctic, a gaseous ring of radiation 300 miles above the earth's surface catches fire. The resulting heat is causing chaos over the world. Admiral Nelson comes up with a plan to fire a Polaris missile from Guam to explode in the fire belt and dissipate it, but the United Nations vetoes it. As conditions worsen, Nelson decides to embark on the mission anyway.; A history of submarines with diagrams of various submarines.