As Alex O'Connor, a CIA analyst, receives his first assignment, his parents -- secretly members of the dormant Russian sleeper cell he is investigating -- receive an unwelcome visitor and an assignment of their own.

Katya is forced to tell a lie that ends up causing a rift between Alex and Mark; Alex starts working on a CIA-FBI task force.

Alex must talk the FBI into risking a dangerous covert operation to locate Mikhail's hidden cache; Katya discovers a secret.

Sam encourages Alex to continue looking for clues; the Rezident doubts Mark and Katya's commitment to the cause; Natalie learns how lethal Black Dagger can be.

When the FBI suspects a mole in the organization and brings in an investigator, Alex must confront his morals; Victor finds a new way to watch the O'Connors.

Natalie must rely on an outsider for help finding important information on Black Dagger; Alex and Sam plan a risky sting operation; Katya wants Alex to throw the task force off track.