The book deals with Isaura, slave who were born almost white and are treated as son for its sinhá, target of the luxury and passion of Enrique, Leôncio (maleficent, controller and luxuriante), Belchior (ridicule, servile and confused) and Alvaro (purely and lovingly). Other directed feelings the Isaura include the envy of Rose (another slave, neglected for Leôncio as amante)e the affection of its father Miguel. In the start one is about the past of its mother, damaged for its owner, the father of Leôncio, that has it with an former-administrator of good heart. When it was for being lines dies this owner and Leôncio inherits it, without intentions of alforriar it. The wife of this leaves it and it orders Isaura for a captivity. From it and the father they run away there for Recife where Alvaro knows and if he gets passionate for it. It goes to a ball of the high society and very is admired by its you endow cultural physicists and, but it is denounced as enslaved by the greedy Martinho. In return in the River she is imprisoned for two months in the trunk and its father goes for the chain. You give to be frees to be married obliged the deformed Belchior for the freedom, finding that Alvaro is married, is hindered for that eliminates the goods of of the Leôncio insolvent debtor, who if kills to run away from the humilhação. History was adapted some times for other medias, more célebre being the novel with Lucélia Saints in the paper-heading.