Tiempo de Revancha

Tiempo de revancha English language Time for Revenge is a 1981 Argentine crime drama film written and directed by Adolfo Aristarain and starring Federico Luppi, Julio De Grazia, Hayde Padilla and Ulises Dumont. It was produced by Hctor Olivera and Luis O. Repetto. The music was composed by Emilio Kauderer. The film premiered in Argentina on July 30, 1981, and wonawards, including the Silver Condor for Best Film and Best Film ex aequo in the Montral World Film Festival.

Pedro Bengoa, an exunion organizing demolition worker, and Bruno Di Toro, an old friend of his, decide to blackmail the corrupt company they work for, setting up a fake accident in a copper pit. Di Toro was supposed to pretend to be Mute as a consequence of an explosion, and Pedro would corroborate his story. During the explosion things dont go as planned and Di Toro loses his life, leaving Pedro to continue the plan on his own, while apparently pretending to be Mute. However, when the company finally agrees to an economical settlement, Pedro refuses to accept, searching justice primarily, and his case goes to the courts. This event changes Pedros life forever.

Source: Wikipedia