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.

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.

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.