January 1945. The Red Army forced the Oder River and stepped onto German territory. But the German troops continue to resist desperately. To identify the weak points in the enemy’s defenses and ensure a breakthrough for Soviet tanks, Major of SМЕРШ Alexey Uvarov is infiltrated into the German military intelligence department. He manages to recruit a German engineer and penetrate a secret fortified area. But at that moment, the Gestapo arrests the major’s courier. Alexey understands that the threat of exposure hangs over him, which means there is practically no time left to complete the assignment…