The team travels to 1870 to deal with what they think is a minor anachronism. They mess up and the threat level escalates, and most of the team is captured by P.T. Barnum. Meanwhile, Amaya returns to the team and tells Nate why she left.

The Legends travel to the 80s after they discover that Ray died there as a child. They soon learn that Young Ray is harboring a baby Dominator... and the government will stop at nothing to acquire it and eliminate Young Ray as a witness. Meanwhile, Jax and Mick discover that Martin may have betrayed the Legends to the Time Bureau.