Twelve year-old Barry Metzler is enjoying his summer vacation when the world suddenly goes crazy. A global chemical attack has infected most of the mammals on Earth. He watches in horror as cannibalistic 'ferals' abandon their former humanity, killing and devouring every living thing they can catch.
Civilization as we know it is torn apart in less than a single day. Aided by a handful of National Guard troops, Barry learns to survive among the shattered ruins of our world.
His father and brother have survived the apocalypse, and Barry sets off on a cross-country journey to rejoin them. He will find what's left of his family, even if all of Hell lies in his way...