The life of Lilly James irrevocably changes the day her parents disembowel her little sister. In a post-apocalyptic version of the United States, Lilly struggles to maintain her sanity, and her very survival, while civilization deteriorates and mutant cannibals threaten to drive the human race extinct. Liam Parker is a single father with a secretive past. Liam is no stranger to tragedy. As a combat soldier, he has witnessed his fair share of death and carnage. However, none of his experiences have prepared him for what lies ahead. When, by providence, the fates of Lilly and Liam intertwine, they discover the true nature of the bizarre phenomenon plaguing the country. They also learn that some secrets are better left unrevealed.