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

Everyone tries to escape the impending nuclear blast; Citizen Z battles thawed zombies and issues an air bounty for Murphy.

The heroes are reunited, but soon find themselves navigating an unexpected tragedy as they engage in fierce fighting with both zombies and bounty hunters who are eager to capture Murphy, dead or alive. Meanwhile, Vasquez makes a strategic decision.

While crossing the Mississippi, the team splits up after a boating accident; 10K is drawn into a scam; Escorpion sentences 10K, Sketchy and Skeezy to death.

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