Three years into the zombie apocalypse, a ragtag team of everyday heroes comes together to transport the only known survivor of the zombie virus from Upstate New York to a lab in California, in hopes of using his blood for a vaccine. A zombie baby proves to be an early obstacle, and what they don't know is that their last, best hope for a vaccine is hiding a dark secret that threatens them all.

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 team is rerouted to a Colorado lab where they hope to find Dr. Merch.

The team reaches the mobile lab, which turns out to be a submarine. Murphy says goodbye.

Warren and gang are taken prisoner; Murphy escapes the sub with his newly formed blends group; both groups head for the same destination.

Warren and team encounter the sole inhabitant of a strange town; Murphy begins a new mission.

More people flock to Murphy's new cult, while the others are stuck in the middle of a war.

A pack of wolves stalks an injured and alone 10k.