When a highly placed Iranian intelligence operative walks into a U.S. embassy claiming to possess explosive information, counterterrorism officer Matt Freed is dispatched to interview him and is warned of an impending attack on the United States that could kill millions. But is the man's story truth or calculated fiction? Matt isn't sure, but with a possible catastrophe looming in less than two weeks, his superiors reluctantly prepare for the assault. With questions still lingering about what is really going on, he defies his superiors' orders and launches his own investigation. As the clock ticks down, he searches frantically for the truth at an Afghan prison under siege, an abandoned Uzbekistan bio weapons facility, and a Moscow hospital where an arms dealer is dying of a mysterious disease.