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.

Cast:Oldřich Lukeš, Ignacy Machowski, Julius Ongewe, Mikhail Postnikov, Kurt Rackelmann, Günther Simon,

Genre:Science Fiction,

country:East Germany, Poland,

Production:DEFA, Crown International Pictures, Zespół Filmowy "Iluzjon",