As the team ascends above 3000m the thin air takes its toll. Zu, one of the fittest members of the team, struggles with altitude sickness, and spirits crash as team members, too short of breathe to even talk, question their ability to continue. Will the dramatic scenery of the Andes and the warm reception of the Andean people give the team sufficient mental strength to face up to the relentless climb in freezing conditions? It is the crux of their expedition over the Andes, and not everyone will succeed. Show less