A smugglers gang is active on the Austrian-Swiss border. Until now, no one has come to their attention. But one day a little girl gets seriously ill and needs medical attention; the young operator will forget that he has to be careful and calls for help through the secret channel.

Oskar Werner
as Student

Fritz Imhoff
as Uncle Otto

Ernst Waldbrunn
as Makkabi

Heinz Moog
as Wartanian

Hermann Erhardt
as Shooter

Walter Ladengast
as The patched one

Rudolf Rhomberg
as Piefke