It’s the early 1970s, the Cold War is in full swing, and MI6 has reason to believe there is a Soviet mole in the highest echelon of the British Secret Intelligence Service. His treachery has already blown some of their vital operations and their best networks. “Brought out of retirement to expose the potential mole, veteran spy George Smiley (Gary Oldman) is the only one who can be trusted to expose one of their own. Or can he? As the emotional and physical stress take their toll on the high-ranking suspects, Smiley is forced into the ultimate international spy game where everyone’s motives are in question.”