Doctor Vasiliev leaves the capital to return to his native village. A cement plant was built there, which was put into operation without cleaning filters. The health of the peasants is seriously deteriorating. They are leaving the village. Those who remain suffer a catastrophe in silence. Dr. Vasiliev decided to invent a device for dedusting, but suddenly died. The death of a doctor changes the situation of the peasants-they start mass protests.—Georgi Djulgerov