Philip and Elizabeth are finally assigned a new handler as Philip works to clean up the mess of the last operation and Elizabeth, in disguise as Clark's sister Jennifer, does her best to smooth things over with Martha. As Stan searches for a missing scientist, Oleg and Arkady continue to argue over how best to handle the situation on their side, leaving Nina once again caught between the FBI and KGB.

A dangerous Naval officer becomes the key to Philip and Elizabeth’s mission as well as a potential threat to their family's safety. Lucia, a Sandinista intelligence officer working with the Jennings, is tasked with getting Elizabeth access to Capitol Hill. Stan struggles with the potential costs of protecting Nina.

Philip uses his agent Charles Duluth to help him gain access to an early precursor to the Internet so that the KGB can bug American government communications. Nina faces the threat of a potential FBI polygraph exam, bringing her closer to KGB colleague Oleg.

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.

A new mission with international stakes has Philip calling on Annelise for assistance just as an old foe returns to D.C. with a vendetta. Stan makes a discovery that could put the FBI hot on the trail of illegals.

Elizabeth makes a shocking discovery about Kate. Philip pursues a contact for information about stealth. Stan continues his pursuit of the illegals.