Carlito, a bank clerk in Rio de Janeiro, is an engrained megalomaniac. Aided by his girlfriend Marta, he executes a wild plan that involves Milton de Souza, a married businessman, director of a factory.
A lady, owner of a large area of land where it is believed there are several oil wells, is almost fooled by the president of a pseudo petroleum company into giving up her property for nothing, but is saved by his son's noble intervention.
The project of urbanization of a shantytown is endangered by lack of money. To get the necessary sum, three friars start to sing in plain clothes, incognito, also recording records and doing shows in nightclubs.
Industrialist's son returns from the USA, where he'd been supposedly studying Nuclear Physics, when in fact he'd devoted himself to pop music, without his father's knowledge.