The film focuses on the leadership of the Great Powers of Europe in the days leading up to the outbreak of the First World War.

Heinrich George
as Jean Jaurès

Albert Bassermann
as Theobald von Bethmann Hollweg

Eugen Klöpfer
as Franz Joseph I.

Oskar Homolka
as Sergei Dmitrijewitsch Sasonow

Lucie Höflich
as Alexandra

Hans Peppler
as Count Pourtales

Alfred Abel
as Leopold Graf Berchtold

Theodor Loos
as Paléologue

Fritz Alberti
as Buchanan

Heinrich Schroth
as Erich von Falkenhayn