A Primeira Missa ou Tristes Tropeços, Enganos e Urucum: On set, in the middle of the Atlantic Forest, a stressed film director begins another day of filming, reproducing the celebration of the first mass in Brazil. Suddenly three strange agents emerge from the forest and abruptly interrupt the scene. Authoritarians, they confiscate the filmed negatives. The paranoid director grumbles: "Are they from the government?". The execution of the film is compromised. Will the director in trouble be able to complete his film?