In the ongoing saga of the Zombie Rules series, Zach, his family and friends are lured from their home in Tennessee and relocate to a post-apocalyptic bunker known as Mount Weather, nestled in rural Virginia. They have been promised a better life by none other than the President himself. Zach's apparent immunity to the zombie virus may hold the key to creating a vaccine and securing a future for the human race.

It's been over two years since the zombie apocalypse changed the world. Zach Gunderson is still reeling after the brutal massacre of most of his loved ones and the abduction of his two children. There is only one person in his life now: Kelly, the sole survivor of the massacre. The two of them have carved out an existence for themselves, but in spite of Kelly's steadfast devotion, Zach finds himself questioning the purpose of trying to survive in a postapocalyptic world.

It's now two years since the zombie apocalypse changed the world. Survival is precarious for Zach Gunderson and his friends. They are encountering zombies who are evolving into something more than mindless automatons, and the group dynamic is threatened by the revelation of a murderer in their midst. They handle each situation in their own special manner, but a seemingly innocent encounter with a group of Marines leads to disastrous consequences.

It is the ninth year of the zombie apocalypse. Zach and his group of survivors at Mount Weather are struggling with the effects of no manufacturing and the difficulties of reestablishing the United States of America. To add to the difficulties, President Stark's position as president is being challenged. If he loses in the upcoming election, what will happen to his right-hand man, Zach Gunderson? 

Zach Gunderson and his friends have carved out a life for themselves in a post-apocalyptic world ravaged by zombies. But survival is a daily struggle. In addition to frequent encounters with hostile humans, Zach has discovered something very sinister about the zombies.