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.

French filmmaker Jean Delannoy directs this inspiring sequel to his biopic about Marie-Bernarde Soubirous (portrayed by Sydney Penny), a young shepherdess who claimed to have seen numerous apparitions of the Lady in White at Lourdes in 1858. Chronicling Bernadette's years with the Sisters of Charity of Nevers convent, the film traces her life from age 22 until her untimely death from tuberculosis at age 35.