1950s. At the village of Rio Bonito, cowboy Diogo leads a horde of oxen to the Ouro Fino Ranch. When passing by the Remanso Farm, he meets Rodrigo, a boy who dreams of becoming a cowboy. Soon they become friends and witnesses of the wrong doings that happen in the region due to Major Batista`s greed. The major orders his thugs to blackmail the local residents, in a way they sell the cattle by the price he wants. The situation changes when Otacílio Mendes, Rodrigo`s father, decide to rebel himself, counting on Dr. Almeida`s help.