Letter Never Sent (1960) is an adventure drama set in Siberia, where four geologists embark on a dangerous expedition to find diamonds. They face challenges including forest fires, starvation, and isolation, while also dealing with unrequited love and the harsh forces of nature.

The best foremen of the two competing collective farms, Olga Stepanova and Maxim Orlov, have long been in love with each other. But between the bride and groom there is a quarrel on the industrial soil, and everything goes to the gap.

A young journalist is sent to the region to prepare her thesis. Here the heroine will have to independently publish several issues of the newspaper, meet people, understand their actions and herself...