A team embarks on a perilous cross-country mission to transport the one man who survived a deadly zombie virus, hoping he holds the key to a vaccine. Three years after the zombie virus has gutted the United States of America a team of everyday heroes must transport the only known survivor of the plague from New York to California, where the last functioning viral lab waits for his blood. The group is confronted by the inhabitants of Zona. Driven by Warren’s dream of a black rainbow, Warren and Murphy make their way back to the mainland. When Sun Mei and Red vanish, 10K and the group must decide whether to keep looking for them, or give up and press on to Newmerica.