Together, they conduct experiments that lead to the invention of the wireless telegraph, a device they use to save the lives of sailors trapped in Arctic ice under the command of Admiral Makarov (played by Konstantin Skorobogatov).

Alongside supportive colleagues, he faces unscrupulous individuals seeking to exploit scientific breakthroughs for personal gain.

Despite offers from foreign institutions, Popov remains a patriot, reflecting the integrity and moral principles that make him a figure of admiration and respect.

[1] The films acknowledges the Italian inventor Guglielmo Marconi, but makes no mention of Nikola Tesla, whose work paved the way for Popov's inventions.

[2] In 1951, Cherkasov, Skorobogatov, Freindlich, and Borisov received the Stalin Prize of the 2nd degree for their work on Alexander Popov.