Virginia forces Alicia and Strand to clear an unusual walker threat, where an encounter with a new ally gives Strand an idea that could be the key to their freedom.

With a code to guide them, Dwight and Sherry become ethical outlaws known as the Dark Horses. When Strand recruits them for a search and rescue mission, it forces them to question their code and their future.

When Charlie shows up at the Tower unexpectedly, Howard recruits a young Ranger in training to determine the reason for her visit; as they journey beyond the Tower together, Charlie's true motives are revealed.