After meeting with newly elected U.S. President Thaddeus Ross, Sam finds himself in the middle of an international incident. He must discover the reason behind a nefarious global plot before the true mastermind has the entire world seeing red.
Columbus, Tallahassee, Wichita, and Little Rock move to the American heartland as they face off against evolved zombies, fellow survivors, and the growing pains of the snarky makeshift family.