It's the end of the line. Sam must choose where he's going to stand, and this time there's no turning back.

Mia tries to engage the strange man, Yamainu, in conversation, and she gets more answers than she bargained for.

Ronnie and Ryan get help to reach Washington DC, but can they get there in time to make a difference?

Stan experiences a harrowing vision of Sam's armor, but is it real? And how are he and Karl going to find Sam in time to help him?