*The virus has taken away Kaelyn’s friends, her family, her home.
And now a deadly enemy threatens to take the one hope she has left: THE CURE.*

When Kaelyn and her friends reached Toronto with a vaccine for the virus that has ravaged the population, they thought their journey was over. But now they're being tracked by the Wardens, a band of survivors as lethal as the virus who are intent on stealing the vaccine no matter what the cost.

Forced onto the road again, Kaelyn and her companions discover the Centers for Disease Control in Atlanta is their best hope for finding scientists who can reproduce the vaccine. But with the virus already spreading among them, the Wardens hot on their trail, and hundreds of miles to cross, Kaelyn finds herself compromising her morals to keep her group alive. Her conscience seems a small price to pay if protects them and their precious cargo. Unless even that is not enough...

In the final installment in Megan Crewe’s captivating the Fallen World trilogy, Kaelyn is on the run from her biggest adversaries yet. While she continues to face horrific loss, her resolve is still strong. But to survive this shattered world, will she have to sacrifice all that's left of the girl she was?