Deadly seismic activities that peaked with a 10.5 earthquake and devastated the West Coast have altered the core structure of the earth and now threaten to jeopardize North America and the Western hemisphere. In a desperate bid to save lives - and the country - President Hollister calls once again upon one of the nation's top seismologists, controversial scientist Dr. Samantha Hill and her supervisor and former boyfriend Dr. Jordan Fisher, to interpret the latest onslaught of quakes.