The film takes place in 1921 on the Soviet-Finnish border. Shyutskorov detachments broke into Karelia, killed Soviet activists, burned houses ... In the rear of the enemy with a special task - to destroy the headquarters of the White Finns on the Kimas Lake - a detachment of Soviet cadets under the command of Toivo Antikainen (Oleg Zhakov) was sent.
The positive assessment of the work of young historian Nadezhda Kovrova went to her head. Confident in her infallibility, she makes a mistake.
About how the antifascists of a Western European country in the 1930s disrupted the loading of weapons intended for the war with the Soviet Union. The film is considered lost.
