On the border between Argentina and Chile, Katia Lafaille, widow of the mountaineer Jean-Christophe Lafaille, sets out on one of the hardest treks in the world. Thirteen days of joy and suffering, to conquer the summit of Mount Aconcagua, the 'Colossus of America', which stands at 6,962 meters... Trek movie, a roadmap of an exceptional human adventure, the film is to see for the breathtaking beauty of the landscapes and for the will of this woman who seems to have some accounts to settle with the mountain.

History of the first ascent of Aconcagua by the south face in February 1954 by the French shock team led by René Ferlet and composed of Lucien Bérardini, Adrien Dagory, Edmond Denis, Pierre Lesueur, Robert Paragot and Guy Poulet. In seven days of combat, they extricate themselves from the mountain in a pitiful state; all except Robert Paragot will be victims of severe frostbite which earned them amputations, some important as for “Lulu” Bérardini who lost part of his left hand.