It begins in California with a devastating biological attack --- a horrific display of homegrown terror unseen on U.S. soil --- just weeks before the presidential election. For the White House, it is a political nightmare, as it threatens to plunge the country into panic and economic chaos. But for the NSA's undercover agent Devlin, it is the ultimate warning. Devlin knows who's behind the mayhem. He knows who controls the media. And he knows that, unless he can stop it, the End of Days begins...on Election Day.