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 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.