When the retreat where Sean and Maria reside suddenly grows exponentially, they must make tough decisions on splitting up and dividing their resources. Unknowingly, this leaves them vulnerable to a new, much larger threat that looms nearby. The devastation of America is also revealed through the eyes of a new character, Lt. Col. Bruce Harris, Commander, 31st Infantry Regiment, 10th Mountain Division. Colonel Harris is tasked with restoring electricity to the small town of Warren, PA, reestablishing order to the area, and tracking down a rogue platoon of Army Rangers that are reportedly pillaging the countryside. All is not as it seems though, and his orders will have life-changing consequences that leave him questioning where his true loyalty lies.