With Elizabeth involved in a secret conspiracy against Gorbachev, Philip finds himself at odds with her when Oleg asks him to sabotage her new mission. A resentful Elizabeth pushes Philip away.
Elizabeth's quest to gather information and get a sensitive device brings up uncomfortable questions from Paige. Stan gets new intel on Oleg.
Paige sinks deeper into her training as a Russian operative. The chasm between Philip and Elizabeth grows larger due to the latter's single-minded pursuit of her mission.
As the political turmoil in the Soviet Union continues, Paige employs some questionable tactics to get information. Philip learns that the US has an inside man in the Soviet Union.
Philip and Elizabeth concoct a plan to blackmail Kimmy's father. However, two murders force Philip to reconsider as he starts to question their methods. Tatiana casts doubt on Oleg's loyalty.
The tension between Philip and Elizabeth reaches a boiling point. Stan gets intel on a Russian spy connected to Elizabeth's mission.
Philip aids Elizabeth in finding the Russian operative named Harvest, but the mission ends with two bodies and mixed results. Stan starts to investigate the Jennings.
As the summit draws closer, Philip and Elizabeth have a confrontation about their respective missions. Elizabeth demands information about the overthrow plot from Claudia.
Philip and Elizabeth find themselves in peril as Stan's investigation brings him closer to the truth and Oleg gets arrested.
With the Jennings running out of options, Philip and Elizabeth makes the decision to leave Henry behind. As the truth finally comes out, Stan confronts the duo as Paige ends up making a shocking decision.