Snart and Sara attempt to rescue their fellow Legends from certain death in a Soviet gulag during the height of the Cold War, while Rip gives Sara a secret and potentially fatal assignment.
The team head to Russia in the 1980s, where Vandal Savage has retreated behind the Iron Curtain and a string of nuclear scientists have vanished.
Bryan is taken during the team's efforts to thwart a Mejia weapons operation, and Bryan and Asha take the next step in their relationship.
While working to discover who killed his friend Lazlo, Darius is forced to reckon with his past, as Liam discovers who's been selling state secrets.