O Tira-Dentes

On the night of the national holiday of April 21st (Tiradentes Day), a group of young students breaks into the university where they study in order to play a tabletop RPG game. Throughout the night, they are brutally attacked by a mysterious killer who dresses as Joaquim José da Silva Xavier (the historical figure known as Tiradentes) and who harbors a dark secret involving the political course of Brazil over the last decade.