Book 3 opens with the SEALs from Shark Platoon looking at being stranded and potentially overrun by infected. But, they receive support from an unlikely source after losing one of their own.
The survivors from Idaho Falls have found a safe refuge for the time being and we get more background information on what the small unit that was with Hathaway went through when the infected swarmed the city.
We're introduced to US. Navy captain Wallace Greerson and his task force Paladin.
The small town of Tenino is now a firebase informally known as Cascade. Martin, Marcone, and Michelle Jones have acclimated to the presence of what remains of 1st Special Forces Group. Colonel Carter and Martin work together to make the town safer.
President Wood safe at Site R, has to deal with a family issue and some startling new intelligence about who or what may have caused the outbreak.
Ronald Chambers and Candace Reed finally make contact with someone that is uninfected and get some surprise guests that literally drop in on them.
The SEALs of Shark Platoon get tasked to extract a high value person who may know something about the virus.
Larkin, Higgins and Tobias are now relatively safe at RMA Sandhurst. But Larkin gets picked for a mission outside the walls due to his knowledge of the surrounding area.
The events at the Dupont Federal Center lead coalesce into a hostile work environment for Captain Angelina Brandon and US Navy Commander Alan Keyes after a conversation with the DFC executive office Quintana.
Hathaway, Valdez, and Axtell have arrived at the DFC but are wary.
The SEALs finally arrive at Nellis AFB and have an encounter with large number of infected that leaves them no alternative but to run into the desert and seek sanctuary at an unlikely location.
Mecceloni, Stone, Durst, Sharon and Cassie have settled in to life at Safeguard with its eccentric owner, Elwood St. John. They have an encounter in Clovis that shows them that not all the threats come from the infected.
Martin and the some of the civilian militia along with the survivors of ODA-141 engage infected at their forward operating base inside Capitol Forest.
Chambers researches into what might be reanimating the infected.