Fleeing an army of the infected, Deputy Marshal Mason Raines is forced to enter an area overrun with lawlessness. When his ex-lover is kidnapped, he must negotiate her release with a brutal warlord set on expanding his empire. Tanner and Samantha continue their pursuit of the gold stolen from Fort Knox. After taking her revenge, Issa awaits Tanner's return to Mount Weather. When a young widow is brutally murdered, she must uncover not only her killers but also their reasons behind it. Discovering that the killing was a precursor to something much larger, Issa must choose between the safety of her unborn child and that of the community's beloved matron.