Charged with the formidable task of finding a string of valuable diamond deposits for the wealth and glory of their country, four Soviet geologists risk their lives to trek through the Siberian wilderness and pass on the mines' locations in a letter. Acclaimed director Mikheil Kalatozishvili reteams with cinematographer Sergei Urusevsky for their third film together, a haunting meditation on patriotism, ambition and risk.

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