Veteran Chamonix mountain guide Michel Servoz and the young aspiring guide Patrick Falavier attempt to climb the west face of the Dru in the Mont-Blanc massif. When they are gone for five days, the captain of the gendarmerie in Morteau is worried, but he cannot undertake research for a rescue without the permission of the family.
| Actor | Role |
|---|---|
 Pierre RousseauMichel Servoz | Michel Servoz |
 Georges ClaissePhilippe Falavier | Philippe Falavier |
 Victor LanouxMaurice Merinchal | Maurice Merinchal |
 Edmond DenisChristian Lajoux | Christian Lajoux |
 Jeanne AllardMarie Servoz | Marie Servoz |
 Jean ValmontCapitaine Morteau | Capitaine Morteau |
 Françoise LugagneLucienne Falavier | Lucienne Falavier |
 Yves PeneauAdrien Falavier | Adrien Falavier |
 Jean AfanassieffGuide de Haute-Montagne | Guide de Haute-Montagne |
| JJoëlle FossierCatherine Servoz | Catherine Servoz |
 Patrick CordierGuide de Haute-Montagne | Guide de Haute-Montagne |