Brazilian photographer Sebastiao Salgado is seen through the eyes of two men: his son, film director Juliano Ribeiro Salgado, who tries to get to know a father who was often away from home, and Wim Wenders, a photographer himself and an admirer of Salgado's work. For forty years, Salgado has traveled across continents in the footsteps of a changing humanity and witnessed some of the major events in recent history, including international conflicts, mass starvation and the exodus of populations. Now he takes on a new project, into the discovery of unspoiled territories and astonishing flora, fauna and landscapes - a tribute to the beauty of the planet.