Dr. Adrian Helmsley, part of a global geophysical team investigating the impact on earth of radiation from unprecedented sun storms, learns that the earth's center is heating up. He warns U.S. President Thomas Wilson that the crust of the earth is turning into risky and that without proper arrangements for saving a fraction of the arena's population, the entire race is doomed. Meanwhile, writer Jackson Curtis stumbles on the equal statistics. While the arena's leaders race to construct "arks" to break out the approaching cataclysm, Curtis struggles to discover a way to shop his family. Meanwhile, volcanic eruptions and earthquakes of unheard of strength wreak havoc round the arena.