U.S. Navy SEAL Chris Kyle takes his sole mission—protect his comrades—to heart and becomes one of the most lethal snipers in American history. His pinpoint accuracy not only saves countless lives but also makes him a prime target of insurgents. Despite grave danger and his struggle to be a good husband and father to his family back in the States, Kyle serves four tours of duty in Iraq. However, when he finally returns home, he finds that he cannot leave the war behind.

What happens when the undead return to life? In a world ravaged for years by a virus that turns the infected into zombie-like cannibals, a cure is at last found and the wrenching process of reintegrating the survivors back into society begins.