This gripping spy thriller tells the true story of a man who dared to challenge the Soviet Union. While planning the manoeuvres of the Warsaw Pact forces, Polish army colonel, Ryszard Kuklinski, had access to top secrets. He discovers that the American nuclear counterattack against Soviet forces is planned to be executed on Polish territory. With iron clad determination, he starts a long, lonely and psychologically exhausting cooperation with CIA. From that moment, the life of his family and his own is in constant danger as one careless move risks utter tragedy.