Philip and Elizabeth are put to the test when a routine mission goes horribly wrong. Stan and the FBI are pushed to their limit when one of their own goes missing.

As Philip investigates the fallout from the last operation, Elizabeth sticks close to home, concerned for her family until she gets a mysterious distress signal. Meanwhile, a walk-in arrives at the Rezidentura - providing both Nina and Stan with unique opportunities.

Philip and Elizabeth both find themselves faced with painful turns in their various missions. Stan fights to gain access to an American military program that could give him the upper hand in his battle of wills with Oleg.