Rachel and Monroe battle with more than wits. Meanwhile, Miles, Charlie, Nora and Aaron get inside the Tower but Tom Neville and son Jason get shut out. Miles and Monroe once again face-off, this time even more lethally.

A captive Nora is tortured and left for dead. Monroe learns of Rachael’s attempt to reach the Tower but is unaware of her deadly plan for him. Meanwhile, Miles is desperate to find out how so many of his close associates are being brutally murdered. Later, Miles, Charlie, Neville, Jason, Hudson and Sanborn struggle to make it out of the Plains Nation to join Rachel and save her from what they believe to be certain death.

Aaron and Rachel speculate on the extreme effects of Nano technology, while he also confides in Cynthia. Meanwhile a figure from Miles's rugged past, Texas Ranger John Fry 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 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.

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.

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 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.

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.

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.

Paranoia strikes Monroe deeply as Neville disappears and Neville’s son Jason makes a big decision. Meanwhile, the familial bond between Miles and Charlie grows stronger. Elsewhere, Miles experiences romantic attraction with both Rachel and Nora. Rachel sets off on her dangerous quest to infiltrate the Tower and restore power to the world before Monroe can ignite a nuclear device.

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.

After Charlie and Nora rescue Miles from Militia, they set off to meet Aaron and Maggie. Tracking Miles and Charlie at every turn is Nate. As the gang reunites and continues on their journey, unforeseeable challenges await.

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.

A final act of heroism by one of their own saves the lives of Charlie and the gang, but the loss devastates everyone and they must carry on with heavy hearts but increased resolve. Miles sets out on a mission with Nora to recruit his former Militia comrade, Jim Hudson and enlist his savage killing skills. Meanwhile, Rachel looks for a power source and a way back into the heart of her daughter Charlie. Rachel also attempts to elude the grip of Randall Flynn, her ruthless former boss and ally of Monroe.

On the run from Militia, Nora leads Miles and Charlie back to the Rebel camp. Meanwhile, Aaron and Maggie search for Grace and Danny stands up to one of Captain Neville’s men.

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.

As the gang nears Neville and his men, their hopes of finding Danny grow until a shocking discovery threatens to impede their efforts. Meanwhile, orders from Monroe have upped the value of Danny's life and Nora connects with a fellow Rebel.

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.

When the past catches up with Miles and Monroe in the form of mutual heartthrob, Emma all hell breaks loose for them physically and emotionally. Charlie and Nora are the ones who rescue Miles this time. Meanwhile Aaron’s life is turned inside out while accompanying Rachel on her tenacious trek to the mysterious Tower where she plans to restore the power.

Miles and the gang are bound for Monroe’s lair – Independence Hall, but their efforts are impeded when they begin to have difficulty separating fantasy from reality. Meanwhile, Monroe starts to grow suspicious of Rachel.