15 year old Isaac Race has already lost everyone close to him. He is about to lose a lot more. We all are. A mystery outbreak sweeps North America,it is chilling in both its speed and deadliness. The odd thing is though, it is only fatal to adults. Too late it becomes clear to authorities that the virus is man-made, a biological weapon, and that the United States is at war...a war it has already lost.As his country is invaded and occupied by the Chinese army,Isaac must lead a ragtag group of survivors across three states in the depths of winter, avoiding not only the invaders, but also other dangers unleashed in a world suddenly deprived of adults and authority, to a safe haven that may not even exist.