Maureen Bisilliat retraces the path taken by Mário de Andrade through the Amazon in 1927. Covering 2,500 kilometers in five weeks on board Lima Gonçalves IV - from Belém to Manaus by the Amazon River and up to Porto Velho by the Madeira River -, the photographer recorded her impressions in a river diary written for his grandson Nicholas, then 5 years old.