orologio en CB01 OFFICIAL. In this short film adaptation of "Eles Não Usam Black Tie", the conflict between Otávio, a worker who defends the strike, and his son Tião, who questions the effectiveness of union struggles under the dictatorship, is presented. As tension grows between father and son, Maria, the mother, watches in silence, while the characters' discussion evokes reflections on the challenges of the working class.