This gripping spy thriller tells the true story of a man who dares to challenge the Soviet empire. While planning the maneuvers of the Warsaw Pact forces, Polish army colonel Ryszard Kuklinski (Marcin Dorocinski - Spies of Warsaw) has access to top secrets. He learns that the American nuclear counterattack against Soviet forces is planned to be executed on Polish territory. He starts a long, lonely and psychologically exhausting cooperation with a CIA Agent (Patrick Wilson - The Conjuring). From that moment, his life and the lives of his family are in constant danger, as one careless move may lead to tragedy.