When Russia threatens to invade Bulgaria, Elizabeth must seek NATO's support. The alliance's existence is threatened however, when France refuse to cooperate.
Following President Ostrov's death, President Dalton and Elizabeth fear an impending power grab within the Russian government; Jay forms a plan to combat Russian propaganda.
Elizabeth, Russell and Mike B must oust Craig Sterling from his role as national security adviser without creating a scandal; the person who hacked Air Force One is identified.
Elizabeth and President Dalton discover a secret that could impact Maria Ostrov's reputation; Dmitri wants to stop being a spy.
An unanticipated turn of events threaten to dissolve a peace deal with Russia; an emergency occurs on the International Space Station.