An engineer struggles with his rival to receive the order to carry out an important construction in the Valle d'Aosta. Both opponents embark on a competitive alpine challenge, with the intention of being able to eliminate the opponent at the minimum opportunity. After an unfortunate accident, one of the two disappears. Although shot in 1943, the film was not released in Italy until February 1945.
| Actor | Role |
|---|---|
 Luis TrenkerEngineer Roberto Rey | Engineer Roberto Rey |
| UUmberto SacripanteMacugnà, the old mountain guide | Macugnà, the old mountain guide |
 Evi MaltagliatiGianna Fortis | Gianna Fortis |
 Ernesto SabbatiniMr. Fortis | Mr. Fortis |
 Mino DoroCorrado Conti | Corrado Conti |
| DDora BiniMaria Macugnà | Maria Macugnà |
| PPaul RainerLawyer Portali | Lawyer Portali |
| TTheo MillerBeppe, the shepherd | Beppe, the shepherd |
 Bobby ToddAn engineer | An engineer |
 Emilio PetacciThe priest (1943) | The priest (1943) |
| PPaul SchmidThe priest (1949) | The priest (1949) |
| LLeo GasperlThe ski instructor | The ski instructor |
| CCarla De GaraGraziella, the orphan | Graziella, the orphan |
| TToni NagelFifonero | Fifonero |
| GGreta LindstromFifonero's Wife | Fifonero's Wife |
| TTherese SpörlA guest in treatment | A guest in treatment |
| LLuis CafellA guide | A guide |
| HHugo LehnerA guide | A guide |
 Tiziano Longo(1949 version only) | (1949 version only) |
| GGiuseppe PirovanoA guide | A guide |
| EEmilio ReyA guide | A guide |
| SSilvano SalluardA guide | A guide |
| MMarco Soler(1949 version only) | (1949 version only) |