A deadly virus is threatening the world's computers. It's smart, fast, and developed by a group of elite hackers. It can break through the highest security, crippling any system within seconds. It's the ultimate cyber weapon. Nobody understands the mind of a hacker quite like Chuck Drayton. But he's gone offline, rocked with guilt after a failed operation cost innocent lives. When Chuck is called back into action, he soon gets caught in the perilous crossfire of an unfolding cyber war and the desperate race to stop the Zero Day before it’s too late.