When a string of grocery store explosions terrorizing the nation goes unsolved, FBI special agent and counterterrorism expert Chance Cooper is pulled back into service after an extended absence and tasked with stopping the bomber at all costs. After all, it's what Chance does best: tracking and capturing monsters. Just as Chance and his team begin the investigation, a biological attack indiscriminately kills hundreds of unsuspecting Americans. When Chance discovers the attacks are related, he realizes that a new and cunning generation of terrorists has emerged in the United States, intent on crippling the economy and bringing the nation to its knees. Now Chance faces the harrowing task of hunting down the terrorists, all while attempting to stay alive in the process. Will he manage to stop them before they strike again or will he remain one step behind a devastating plot with the power to bring down the United States and the American people? In this suspense-filled thriller, a seasoned FBI agent and his team must battle a terrorist group preparing to instigate an evil plan on innocent Americans.