East German film about the history of Red Orchestra, a real life German pro-Soviet spy ring created after the rise of Hitler that turned into a resistance movement led by a leftist Nazi officer, Harro Schulze-Boysen, and Arvid Harnack.

Horst Drinda
as Arvid Harnack

Irma Münch
as Mildred Harnack

Horst Schulze
as Adam Kuckhoff

Barbara Adolph
as Greta Kuckhoff

Klaus Piontek
as Harro Schulze-Boysen

Jutta Wachowiak
as Libertas Schulze-Boysen

Eckhard Bilz
as Fähnrich Thierbach

Harry Pietzsch
as Walter Küchenmeister

Karin Lesch
as Elfriede Paul

Marylu Poolman
as Elisabeth Schumacher