Three years into the zombie apocalypse, Lt. Hammond assembles a team of everyday heroes to transport the only known survivor of the zombie virus from New York to California in hopes of using his blood for a vaccine.
In New Jersey, the survivors run out of fuel and embark on a dangerous mission to replenish their supply. Meanwhile, Cassandra's past comes back to haunt her.
The survivors make their way through the mean streets of Philadelphia, where they cross paths with a group of psychotic outlaws with ties to one of their own.
The group finds themselves trapped in a morgue as a giant hoard of zombies approach. Citizen Z gets an unexpected visitor who might not be who he seems to be.
Murphy is kidnapped by a group of outlaws trying to crack the 'Fort Knox of Oxycotin.' While the survivors fight drug enhanced zombies, Murphy makes a startling discovery about his abilities.
