Violentadores de Meninas Virgens (1983)

A group of wealthy men hire a pimp to provide them with virgin women to rape. Then they proceed to kill them. The police have no trace. Pedro, the launderette operator, found a knockout knob from the jacket of one of the perpetrators. After finding the police report, he found himself alone in the fight against the entire gang. He had to pay for the life of his girlfriend and her brother in order to take revenge.