Railway employee Fritz Marr is not regarded well by his superiors. It is the year 1920, and trains regularly pass the railway hub of Erfurt to the East to secretly transport weapons for the fight against the young Soviet Union. Marr knows about this and wants to mobilise other workers to stop these illegal deliveries. To muzzle him, Marr is relocated to a remote rail work construction site.

Alice Graf
Hella Merkel
Horst Schön
Fritz Marr

Gerhard Bienert
Wilhelm Merkel

Martin Flörchinger
Ralow

Hans-Peter Minetti
Lehnert

Rudolf Ulrich
Althoff

Hans Klering
Schwerte
Hans Wehrl
older worker
Waldemar Pottier
observer
Harry Gillmann
Riemer
Hans W. Hamacher
von Ulmer

Jochen Thomas
Basstreter
Gerd Biewer
french officer
Horst Lommatzsch
estate inspector
Wilhelm Gröhl
bourgeois