There was a time when CIA officer Nathan Muir (Robert Redford) and his protege Tom Bishop (Brad Pitt) were inseparable, travelling the world and tasting everything it had to offer.. From Vietnam to Berlin to Beirut. In a profession fraught with danger and uncertainty, Muir and Bishop forged an uncommonly close friendship. But that was years ago Now, in 1991, on the brink of his retirement from the agency, Muir learns that Bishop has gone rogue, jailed overseas on espionage charges and is scheduled to die in 24 hours. Muir decides to take the most dangerous and personal mission of his life.