Juan Salvatierra, a mute, humble and self-taught painter, left his children a mysterious painting as an inheritance: an immense mural that occupies almost four kilometers of rolls of fabric and that he painted in secret until the day of his death. Upon discovering that a part of the work is missing, his son Miguel will delve into the enigmas of the artist's past in an adventure that, from Argentina to Uruguay, will lead him to reconstruct the true history of his family and to rethink his own life.