Red acclimates to his new surroundings in federal prison, where he is challenged by an old rival. Samar goes undercover to stop a black market organization that fronts cash to criminals. Meanwhile, Liz and Jennifer continue their investigation into Red's past.

Liz and Jennifer's pursuit of a lead on the truth about Reddington puts them in unexpected danger. Red steps in to help mediate a brewing prison gang war.

The Task Force delves into the unregulated world of cryptocurrency in order to stop an impending attack, while Red undertakes a risky endeavor in order to secure his freedom.