When former president Thomas Carver Banks is appointed secretary general of the United Nations the final phase of an intricately laid plan to destroy America is set in motion. After a string of national emergencies the government is forced to activate a top-secret plan known as "Main Core" - a list of Americans from every walk of life deemed "too potentially dangerous" to be roaming free. At the top of the list: counterterrorism operative Scot Harvath.