When Miles leads Monroe and Rachel south of the border; they're met with much more than they bargained for as Neville and Julia dance a delicate dance. Meanwhile, Charlie and Gene continue their search for Aaron.

Monroe finds himself in unfamiliar territory and must make a choice about his son Conner, while Neville and Julia continue to tango at Jason's dismay. Meanwhile, Gene leads Charlie to an uneasy discovery.

When Gene decides to assist the town of Willoughby, Rachel and Charlie feel compelled to help too as Miles and Monroe continue to join forces in order to survive.

Monroe leads Connor and Charlie on a risky mission, as Miles and Rachel keep an eye on things in Willoughby. Meanwhile, Neville gets a new assignment and Aaron reunites with an old friend.

With their lives in danger in New Vegas, Monroe and Connor face a difficult decision in order to survive. Back in Willoughby, Miles questions whether he can trust Neville and Jason to help take down the Patriots. Meanwhile, Aaron and Priscilla find themselves at odds over the nano code.

Monroe, Charlie and Connor make their way back to Willoughby, where they find that the Patriots' reeducation center is up and running. An encounter with two of the center's young cadets leaves Rachel and Miles divided on the lengths they are willing to go in order to take down the Patriots. As Neville and Jason find a new ally for their mission, more about the history of the Patriots is revealed.

While Dr. Porter and Miles venture into Willoughby in search of allies within the town, Monroe seizes an opportunity to surprise the Patriots. Neville’s political maneuverings put him and Jason in serious danger, as Aaron and Priscilla continue on their journey.

Frustrated with Neville, Jason turns to Miles with crucial information about the Patriots’ next steps for Texas. Determined to derail the Patriots’ plans, Miles and Monroe rush to Austin with Jason, Charlie and Connor in tow. Meanwhile, Aaron grows suspicious of Priscilla’s increasingly unusual behavior.

As Miles, Monroe, Charlie and Connor rush to escape Austin, a confrontation with Texas Rangers separates Miles from the group. While out searching for Miles, Charlie is confronted by Neville who demands information on Jason's whereabouts. As a wounded Miles faces increasingly hopeless circumstances, Aaron learns that the nanotech has been busy.

Truman, empowered with new authority from the President, launches a mustard gas attack designed to kill Miles and Monroe. To Rachel's disappointment, Miles agrees to join Monroe in a ruthless plot to beat the Patriots at their own game. As Neville faces his own challenge from the Patriots, Aaron grows increasingly alarmed by the power of the nanotech.

United by their desire to take the Patriots down, Neville and Monroe form an uneasy alliance. As Rachel comes face-to-face with the nano-tech while searching for Aaron, things don't go according to plan for Miles, Charlie and Gene when they try to steal the Patriots' supply of mustard gas.

Miles, Charlie and Monroe launch an attack on the Patriots, but must improvise a risky new plan in order to halt the oncoming war between California and Texas. Out for revenge, Neville sets his sights on President Davis. Meanwhile, Aaron and Rachel’s efforts to save Priscilla from the nano-tech has unexpected consequences.