Rio de Janeiro, May 1981. DOI-CODI, the body responsible for the repression during the days of Brazilian military dictatorship, organized the “Mission 115”, which aimed to “observe” closely a show in honor of International Labor Day, in the show house Riocentro. However, the mission failed to highlight its main objective: to carry out a terrorist attack by incriminating leftist revolutionary groups and thereby sabotaging the country’s re-democratization.