In 1949, Raymond Maufrais, aged 23, left to cross all of Guyana alone. He never returned from this expedition and if an Indian Emerillon had not discovered in 1951, by a miraculous chance, his notebook, we would never have known what had happened to him. Raymond Maufrais’ diary upsets explorer Eliott Schonfeld. Page after page, he sees himself loving her as a friend, despite the 70 years that separate them. So he decides to try this impossible expedition again, to finish it, to finish Maufrais’ dream.