After an epidemic spreads through the country, Brooklyn Harper’s high school years come to an abrupt end.

Implanted in a rural camp, Brooklyn and her friends are cut off from their families and the outside world. Each day is filled with combat training to assure their safety against the crazed, belligerent, and deadly— those infected with a mysterious virus.

If the world couldn’t get any crazier, a letter ups the insanity…

After being assured day after day that the world outside their little camp had been compromised, Brooklyn’s cabin-mate, Dawson Winters, finds a letter that turns everything they’d known upside down. There is a world outside the trees that surrounds their camp, and the virus they all feared seems non-existent.

Determined to see it herself, Brooklyn plots with others to attempt an escape…

On the outside, Brooklyn finds the world is as normal as ever. But when they are attacked in the city, they dispose of their attackers far more efficiently than any normal human.. Is there more to Brooklyn and her friends then just being highly trained?

As their exploration continues, the group is faced with impossible feats. Betrayal, love, death, and a powerful sense of camaraderie lead Brooklyn and her friends to fight for their life, their freedom, and most of all, each other.