With his back against the wall, Raymond Reddington faces his most formidable enemy yet: Elizabeth Keen. Aligned with her mother, infamous Russian spy Katarina Rostova, Liz must decide how far she is willing to go to find out why Reddington has entered her life and what his endgame really is. The fallout between Reddington and Keen will have devastating consequences for all that lie in their wake, including the Task Force they helped to create.
Red directs the task force to investigate Roanoke, a legendary criminal who orchestrates elaborate extractions. Meanwhile, Liz works to hatch a secret plan with her mother, Katarina Rostova.
As Liz pushes a source for answers, Red and the task force grapple with the implications of her actions. Tensions boil over and a drastic action is taken, which will change Red and Liz's relationship forever.
The task force investigates an organization of bank robbers with a special expertise in stealing from other criminals. An old blacklist case resurfaces.
Red and Dembe go to great lengths to fulfill the final wishes of a dear friend. Aram goes undercover as an interpreter to a company that provides services to criminals, while Park helps a friend in trouble.
The task force is thrown for a loop when they encounter a nefarious enterprise that provides doppelgängers for criminals. Red scrambles to counteract a bold move by Liz.
The task force attempts to stop an abduction by searching for a "treasure man" who uses geocaching to hide illicit goods and facilitate transactions between otherwise warring criminal factions.
The Task Force hatches a plan to steal a Soviet-era cipher machine needed to decrypt coded messages. Townsend puts Liz's loyalty to the test. Red and Dembe are called to an unexpected meeting.
Hoping to move some precious cargo quietly, Red enlists the assistance of an enforcer who specializes in transporting items through an underground network.
Liz, Red and Dembe are forced to work together to survive an attack from Townsend. Cooper and the Task Force attempt to de-escalate the increasing danger to all.