Set in the final days of World War II, in the midst of fierce fighting on the Eastern Front. As the Western Allies and the Russian Red Army make their advance towards Berlin, a British Army Officer attached to the Red Army discovers a secret that can shatter the unity of the Allies. Seized by Stalins dreaded Itelligence Service, he finds unexpected help from an enemy and fellow prisoner, a german captain. A common bond binds the two officers by honour, oath and secrets. Joined by Anna, a beautiful Polish nurse cast adrift in the tides of war, the three are pursued by the ruthless Russian Intelligence Officer intent on preventing them from reaching Allied Command with a secret that could change the course of the war and the fate of millions.