Foreign agents from an unidentified nation clandestinely install radio and TV antennas in Rio de Janeiro devices that emit subliminal waves that alter the perception of the population. They aim to transform the people into an aggressive and imbecile mass, leading the country to chaos, allowing the government to be taken to usurp Brazil's natural wealth. A journalist, Carlos, accompanied by chemist Laura Leal, begins to investigate a series of facts and discovers those responsible for the disturbances.

A wife dissatisfied with her husband's vagrancy asks her father, who lives in Paraíba, for help. He then sends two henchmen to Rio to make his daughter a widow, but she reconciles with her husband and needs to prevent the tragedy. Based on the play by João Bethencourt.

Otavio has to find and marry Madame Bettina's daughter if he wants to inherit her fortune.

The story of how D. Pedro I proclaimed the Brazilian independence on September 7th, 1822, and rose from prince of Portugal to first emperor of Brazil.

A retired civil servant decides to return to his hometown to reencounter his first and only love.