The Soviet atomic bomb had its own homeland, a closed military city in the Chelyabinsk region, which today is called Ozersk. In 1947, the first nuclear plant in the USSR, the Mayak Production Association, was built in Ozersk. However, the revolutionary nuclear industry had its own price, because since 1949 Mayak had been dumping tens of tons of liquid radioactive waste into the Techa River every day for ten years, on the banks of which at that time there were dozens of settlements. Later, the government began to resettle these settlements, but some villages were left in their original place. So, Brodokalmak, Russkaya Techa and Nizhnepetropavlovskoye are still located near the Techa River, the level of radiation in which is still extremely high. The film tells the stories of the inhabitants of these places, who are forced to survive in the presence of radiation and who inevitably consume small doses along with river water. How is the invisible danger perceived and perceived by the locals? How does the secrecy surrounding the nuclear project continue to affect the population of the Techa River? And why were these people left to survive alone with the atom?