The film is inspired by the record-breaking solo trip around the globe in a hot-air balloon made by the world-famous Russian explorer Fedor Konyukhov in July of 2016. Throughout his remarkable life, Konyukhov has proven time and time again that willpower, perseverance and faith can help overcome fear and doubt, and lead a person to triumph.
The action takes place from April to December 1986. The Ukrainian department of the KGB of the USSR becomes aware of the interest shown by foreign intelligence services in the Chernobyl nuclear power plant. To establish the whereabouts of an experienced CIA officer, Albert Lenz, who is suspected of espionage, on the territory of Pripyat, Lieutenant Colonel of military counterintelligence Andrey Nikolaev arrives in the city.