The front-line friends during the heavy battle swore to each other that the one who would survive would continue the work of the deceased. Mikhail Nesterov remained alive and the main business of his life was the search for a deposit of valuable clay. These searches began his friend before the war, in remote taiga places. Yevdokiya Perevalova — the widow of a deceased friend decides to help Nesterov get to those deaf places...