Catuá-Ipixuna, Mamirauá, Uatumã and Uacari are some of the environmental reserves located in the Amazon basin and examples of a total of 35 communities totaling 16.4 million acres of forest in conservation areas. The river is the only means of access to these communities. The film crew used the structure of the Native Project, led by film-maker Jorge Bodanzky, using a boat equipped with digital cameras, plus the entire infrastructure necessary to navigate for several weeks and hundreds of kilometers.The documentary counted on the active participation of the local inhabitants in capturing images, testimonials, choice of themes and image editing. Access to technology by means of movie workshop gave the cabloc a voice. Since they are in a region of great socio-environmental pressure, shown here in a very transparent way, their battle is for survival and awareness about the importance of the forest in fighting climatic changes. From the heart of the Amazon to the world, we come to know that it is the daily life of these people who live in the farthest reaches of Brazil. What they think, what their dreams and hopes are, how they solve the problems they face living "Within The River, Among the Trees".