In last year's finale, our heroes made the treacherous journey to the Tower and were able to turn on the power, but at what cost? The effects of this move prove to be catastrophic for everyone. Now, Miles, Aaron and Rachel have found themselves in a mysterious small town, in the great nation of Texas where Rachel unexpectedly encounters an important figure from her past. Charlie finds herself on a mission in the Plains Nation while Neville and Jason search a refugee camp for a lost loved one. Meanwhile, Monroe has discovered a gritty role in his new environment.

Miles's life is in grave danger as he finds himself in the clutches of Titus Andover (Matt Ross). Charlie is determined to find Monroe, as Rachel and her father, Dr. Porter desperately attempt to revive Aaron. Meanwhile, Neville hatches a plan to infiltrate the Patriots.

Rachel makes a valiant attempt to rescue Miles and to escape with an ailing Tribesman's wife, while Neville and Jason are caught off-guard, assaulted by unhappy refugees. Charlie and Adam (Patrick Heusinger) are at odds over what to do with Monroe. Legions of Tribesmen threaten all of Willoughby but with questionable leadership and Aaron faces passing, yet again.

Monroe and Charlie's dynamic begin to evolve. Meanwhile, wounds of Miles and Rachel begin to heal, yet her curiosity and heightened awareness could be her undoing. Neville's manipulation of Patriot power brokers makes Machiavelli look like a cherub and Aaron's mind works overtime awake or asleep with mind-blowing effectiveness. Rachel and Miles begin planning a resistance to what they believe might be the Patriot occupation.

Aaron and Rachel speculate on the extreme effects of Nano technology, while he also confides in Cynthia (Jessica Collins). Meanwhile a figure from Miles's rugged past, Texas Ranger John Fry (Jim Beaver) reemerges. Fry could be Miles' chance to bring down the Patriots in a big way, however Fry will need convincing. Charlie has a surprise for Miles and her mother, while Secretary Allenford (Nicole Ari Parker) holds a secret important to Neville.

As Charlie, Rachel and Gene question Monroe's true allegiance, Miles himself is weary of his former friend's intentions. Meanwhile, Aaron continues to have visions that lead to endless questions.

When Rachel discovers some unsettling truths, Miles does what he does best to overcome obstacles before him and those he cares about. Meanwhile, Charlie shares a moment with her mom as Neville and Jason continue with their struggles between father and son

As Miles and the gang try to escape the perils of their current situation, Rachel and Gene continue to struggle with their relationship, which affects Charlie. Meanwhile, Neville takes a gamble with the Patriots.

The relationship between Rachel and Gene remains strained as Charlie shows her mom how much she's grown. Meanwhile, Neville gives Jason a determined proclamation.

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 whilst 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.

The nano code continues to cause Aaron and Priscilla problems as it continues causing friction between the two. Miles isn't sure if he can trust who he has in mind to take down the Patriots. In New Vegas, a difficult decision that could mean life or passing has to be made by Monroe and Connor.

Aaron awakes to find himself in a world with power, married to Priscilla and running his company. As he gets the feeling that something isn't quite right, familiar faces begin to appear.

Upon returning to Willoughby, Monroe, Charlie and Connor find the Patriots' reeducation center is up and running; Rachel and Miles are at odds on how far they are willing to go to take down the Patriots; Neville and Jason find a new ally.

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 tohug 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.