Mauri Koski

After Nazi Germany invades Poland in September 1939, Russia attacks Finland two months later. Finnish reservists leave home and go to war. Brothers Martti and Paavo Hakala, farmers from the municipality of Kauhava in the province of Pohjanmaa/Ostrobothnia, serve in a Finnish platoon.

Relations between Sweden and Finland come to near breaking point. When further negotiations led by President Mara fail, Sergeant Körmy interferes in the course of events.