The greatest American explorer, the German scientist, Alexander von Humboldt, tells his journey to New Spain in 1803, while preparing the edition of his Magna work Cosmos, in his library in Berlin, Germany. During its travel, he discovers the extraordinary biodiversity, the mineral, volcanic, architectural and pre-Hispanic wealth that our country possesses, as well as the profound inequality. Their scientific contributions are as valid today as they were then. Directed by Ana Cruz