Blockade of Leningrad. Winter of 1942. Soviet counterintelligence finds out that the Germans are preparing a sabotage on the "Road of Life" - the only way by which food and other goods are delivered to the city. Most likely, the saboteur is one of the drivers of one and a half trucks working on the frozen Lake Ladoga. The captain of the NKVD Sergienko must find and stop the enemy ...
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