The war nears its end, but Nazi Germany remains unbroken. German command plans to turn the tide against the Soviet army. Soviet counterintelligence captains risk their lives to thwart German plans behind enemy lines and on the home front.

1944. The war is nearing its end, but the back of Nazi Germany has not yet been broken. The German command is hatching plans that will allow Hitler's troops to achieve a turning point and defeat the Soviet army. German intelligence is taking the most active part in this, and is ready to do anything. Two captains of Soviet counterintelligence, Konstantin Lavrov and Pavel Semyonov, risking their lives, are ready to carry out the most difficult, dangerous and seemingly impossible tasks of the command to counter the plans of the Germans both behind the front line and in the Soviet rear.