A mysterious magnetic spool found during a construction project is discovered to have originated from Venus. A rocket expedition to Venus is launched to discover the origin of the spool and the race that created it.
Oldřich Lukeš
Ignacy Machowski
Julius Ongewe
Mikhail Postnikov
Kurt Rackelmann
Günther Simon
Hua-Ta Tang
Lucyna Winnicka
Yoko Tani
Ruth-Maria Kubitschek
Eva-Maria Hagen
Karen Fredersdorf
Werner Senftleben
Nico Turoff
Eduard von Winterstein
Stanisław Igar
Artur Młodnicki
Józef Pieracki
San Din Tscho
Danuta Szaflarska
Lieselotte Schmook
Paul Paulsen
Barbara Leonhard
Omani Mensah
Horst Shafer
Vera Oelschlegel
Erich Lie
Hans Ulrich Laufer
Gertraud Kreissig
Heinz Kögel
Peter Kiwitt
Karl-Helge Hofstadt
Fritz Decho
Karl Brenk
Christoph Beyertt
Fredy Barten
Klaus Bamberg