Newly qualified Swedish psychiatrist, Dr Dromyrk, begins his career in a Berlin mental hospital, under the guidance of eminent consultant, Professor Bernheim. With clinical duties extending to nearby Beelitz military hospital, Dromyrk chances to meet a young wounded corporal of a most weird nature -- Unteroffizier Adolf Hitler. Working as the Professor's assistant, when later attending to Hitler, now the Fuhrer, Dromyrk thus gains insight into how the Fuhrer's disturbed mind fluctuates in its moods. This knowledge of how the dictator's mind functions proves to be a most valuable asset to Allied military leaders, so that when Dromyrk eventually makes his escape to England, he is seconded to the War Office to render his help with this unique information in defying the German war machine.