A wealthy inventor arrives at Grey Sloan and asks Koracick for help; Meredith struggles to save a woman with diabetes who has been rationing her insulin; Jo and Link fight to save a young man who fell onto train tracks.
Philip juggles the many women in his life while Elizabeth takes drastic measures to complete a mission. Stan asserts a plan to save Nina with an unlikely ally.
Tensions simmer between Philip and Elizabeth as they disagree over handling orders from the Centre. When Elizabeth loses key intel, Philip enlists Annelise on a mission with an unexpected outcome.
Elizabeth and Philip come together to deal with a mission gone wrong, but struggle to reconcile their increasingly opposing ideologies. Stan welcomes a Soviet defector, Zinaida, to America. Nina acclimates to her new living arrangements.
Danger mounts for Elizabeth and Philip as they get closer to the inner circle of the C.I.A. Afghan Group. Stan monitors Zinaida. Agent Aderholt challenges Agent Gaad on a crucial operation. Arkady tasks Oleg and Tatiana with gathering high-‐level intel. Martha proposes a lifestyle change to Clark.