Brazil 1821. Upon his return to the imposing farmhouse, Antonio, a rich cattle herder, finds out that his wife dies in labor. Forced to live in the property with numerous African slaves, he marries his wife's niece. A restless soul, he returns to droving, leaving his young wife behind alone with the slaves.

The movie tells the story of Laerte (Lázaro Ramos), a talented violinist who after failing to be admitted into the OSESP Orchestra is forced to give music classes to teenagers in a public school at Heliopolis. His path is full of difficulties, but the transforming power of music and the friendship arising between the teacher and the students open the door into a new world

The story of Allan Kardec, from his days as an educator to his contribution to the spiritist codification.