When a disease runs rampant, turning people into cannibalistic horrors, society comes to a halt. Kate manages to escape the sadistic captivity she has endured and collides with Nick, a Marine haunted by the scars of war.
They join forces to navigate a treacherous landscape, battling the undead and hostile survivors. But what happens when the monsters outside are the least of their worries?
Nick's shame is crushing, and Kate's distrust is swallowing her whole. Will they overcome the darkness that threatens to consume them from within? And what will become of a world overrun with creatures that cannot seem to stop...laughing?
