Follows the story of Opinião, a theatre group created in 1964 during the early Brazilian dictatorship period to oppose the government through artistic performances. Considered the first left-wing response to the dictatorship, the group gathered now famous Brazilian artists such as Nara Leão, Maria Bethânia, João do Vale and Millôr Fernandes.

Documentary about the birth of bossa-nova, in Brazil, and the major stars of this musical style.

Documentary about Maria Bethânia, at the very beginning of her career as a singer, when she arrived in Rio da Bahia to replace Nara Leão in the show Opinião. Bethânia's appearance, at that time in southern Rio, was a cultural shock that shook the city. The film also contains scenes of her daily life and meetings with other musicians.