In the interior of Brazil, a farmer is responsible for the education of the daughter of one of his settlers. Years later, the girl returns from school with a nun and the farmer does everything to prevent her from know her parents.
After a fall, intelligent young Plácido becomes a little slow. As an adult he works at a bank and his keen intelligence returns when he drinks the soft drink "Super Plá". Other side stories include the love relationship between Baby Stompanato and Joana Martini, and the life of Majô Prado, a neurotic millionairess and prominent personality living in São Paulo.
Gumercindo is a simple man who sees the daughter become pregnant of the son of its boss. Determined to demand that his grandson have a father, he joins neighbors to seek justice in his own way.
