The beautiful woman and the brave man disembark the train at the tiny station in the desert. He is the test pilot of the hypersonic nuclear-powered plane called Cyclone, and she is the physicist studying the strange phenomenon encountered by the first flier of the Cyclone jet, named Kazantsev.
| Actor | Role |
|---|---|
 Vyacheslav ShalevichNot listed | Not listed |
 Nikolai GritsenkoNot listed | Not listed |
 Aleksandr GraveNot listed | Not listed |
 Vasiliy MakarovNot listed | Not listed |
 Fyodor NikitinNot listed | Not listed |
 Valentina KibardinaNot listed | Not listed |
 Vladimir MaryevNot listed | Not listed |
| VVasiliy MaksimovProfessor | Professor |