en Cuevana 3. The very first work of a young scientist Igor Panteleyev caused a sensation. Not surprisingly, they are interested in foreign intelligence. Soviet security officers are taking measures to protect the scientist. The name of Panteleyev disappears from the pages of newspapers and magazines. The scientist is transferred to work in another research institute, changing his surname to Evdokimov. But due to chance, foreign spies found a researcher.