George Smiley, a retired British Intelligence agent, is unexpectedly drawn back into the world of espionage when a former colleague arrives at his doorstep. The friend reveals that a high-ranking official within the agency is secretly working for the Russians, and Smiley is tasked with uncovering the traitor's identity without any official resources or access to confidential files. With only his wits, a few trusted allies, and the utmost secrecy, Smiley must use his exceptional skills to uncover the truth and bring the spy to justice.
Retired espionage veteran George Smiley is called out on a top secret mission...