The show depicts Operation Car Wash (Portuguese: Operação Lava Jato), an ongoing police taskforce that discovered a widespread corruption scheme involving the Brazilian government and several prominent engineering firms.

[9] Cassio Starling, in a criticism for Folha de S. Paulo, said that "As was clear from both " Elite Squad ", in addition to the box office success, Padilha seeks to provoke social responses, make the public react to anesthesia and automatic slogans .The enormous attention focused on Lava Jato, on the effects of investigations on the present and the immediate future of the country, could not escape the opportunism of Padilha.

He also commented that "although it doesn't seem a little forced, [Selton] Mello improves a lot throughout the series and manages to lead the story well in the shadows while [Caroline] Abras creates a complex and strong detective who seeks to find the corruption behind the country "He added that" The Mechanism could have been much better than it actually was.

"[12] Ritter Fan, from Plano Crítico, wrote that "The scripts of the episodes, all written by Elena Soarez, are beyond didactic, with endless repetitions that hit the same monkkey practically every chapter like" fighting cancer does not leave anyone unscathed And things like that.

In the field of performances, Selton Mello once again shows that he is one of the best Brazilian actors of his generation, even considering his irritating inability to speak out, his trademark since the beginning that makes understanding what he babble quite complicated. "