Armed with information and an upgraded Lifeboat from the future, the team chases Rittenhouse to California at the start of the 1848 Gold Rush -- hoping to find a way to save Rufus along the way.

Emma takes her team to North Korea in the winter of 1950, where the team realizes the enemy may have lured them into a trap. With everything on the line Lucy, Wyatt, Rufus, and Jiya determine to help a pregnant women escape the country.