When Matt Connor was an Army Ranger, he confronted America's enemies in distant lands, but now as an NYPD detective assigned to Homeland Security's counter-terrorism team TOP, he comes face-to-face with danger beyond any he's ever experienced. Arab terrorists have acquired a tactical nuclear weapon from Russian FSB soldiers and plan to use it to kill the presidents of both the United States and Russia. In order to circumvent Homeland Security's technology and profiling techniques that have targeted young Arab men, the Arabs have formed an alliance with Chechen rebels who have been fighting the Russians for generations, seeking to break away and form their own nation. The Chechens will go to any length to attack their Russian enemies, even killing thousands of university students in the heart of New York City. But from the beginning, deception runs through the partnership... Arabs to Chechens to Russian Mafia to sleeper cells, no one is exempt from deceit and betrayal. Matt and TOP, guided by the warrior ethos, improvise, adapt, overcome, race to intercept the Crescent Alliance before it devastates the icon of America's financial and cultural wealth, New York City.