Just months before the Battle of Central Park and the onset of the Second Civil War, President Obama declares martial law in New York, New Jersey and Connecticut as Montoya's encephalopathy spreads.
Despite the military's best efforts, the government falls and Manhattan is reborn as a city-state under a military dictatorship. Survivors Mike Calaf, and Avalon Calendar struggle to survive, caught between the zombies and the new ruler of New York.
But long before the zombie infection, during the First Civil War, Doctor William Jackson (of the Confederate States of America) is trying to unravel the mystery behind this strange new sickness. He knows that if Complex P fails to work, there could be devastating consequences which might influence the future of mankind.