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.
An officer accidentally leaks information about the first test of a new aircraft model. When spies get hold of this classified information, the development of the new airplane is under threat.
