Spring of 1945. The armed forces of Nazi Germany are preparing to repel the onslaught of Soviet troops in East Prussia, which could be fatal for the Germans. The front line is inexorably approaching Konigsberg. The German command orders the units of the Wehrmacht and Volkssturm to turn the city into an impregnable fortress, preparing it for a long defense. Now Koenigsberg cannot be taken from the outside. A few weeks before the Red Army offensive, Aleksey Bobrikov and Leonid Filatov receive orders to penetrate the impregnable city in order to carry out sabotage tasks, the most important of which is to find a weak spot in the fortifications of Konigsberg for the most bloodless assault. Leonid and Aleksey enter the besieged city and begin conducting probably the most cunning and deadly intelligence operation in their lives. And an unexpected ally will help them in organizing the "perfect assault".
