A chorus of voices calls out from the Marañon canyon. The threat of two mega-dams would flood villages, unique forests and rock paintings yet to be studied has call out at most of thousands of people that would be displaced. Together they face the government and the Brazilian company Odebrecht, one of the most powerful and corrupt of Latin America. Communities and activist groups have come together to ensure that the Marañon river continues to flow freely. What would the consequences be of interrupting this ancient, vital connection between the Andes and the Amazon? Are the benefits offered in return worth it? A documentary that shows the struggle of a people in defense of their home and all that what represent.