The Amazon is the river of superlatives: the longest - 7,025 km, the most powerful, the most indomitable - no dam possible for hundreds of kilometres. Its waters cross the largest tropical forest in the world: the Amazon, "the lungs of the earth". Going against the current of this gigantism, this documentary is betting on approaching this extraordinary natural space through one of its tiniest productions: the cocoa bean. Scientists, chocolate makers, producers and farmers, many are those who, faced with the deforestation of this unique ecosystem, use this chocolate seed to recreate, on a small scale, human exploitation in harmony with nature. This film tells us about the fight of those who decided to make cocoa the spearhead of environmental defense in Brazil.