本片根据意大利真实事件改编而成。上世纪80年代初期，黑帮首脑多玛索·布西达从意大利移居巴西，然而远在意大利的自己的哥哥与孩子却相继被黑帮团伙杀害。为了惩治凶手，他开始与意大利警方合作，在两方的不断努力下，多玛索·布西达不仅抓住了杀害自己亲人的幕后黑手，并将意大利盘根错节的黑帮团伙连根拔起…

影片讲述了七任意大利总统朱利奥·安德烈奥蒂(Giulio Andreotti)的故事，他被控与黑手党有联系，但是他最终被判无罪，因为审判涉及行为已超出追诉期限。

Palermo, Sicily, 1984. Examining magistrate Giovanni Falcone allies with Tomasso Buscetta, a former mobster, to defeat the clan of Corleone, the ruthless Mafia faction that rules Cosa Nostra with an iron hand, cruelly eliminating all those who dare to oppose its immense power: other criminals, policemen, judges, even innocent civilians. One of them wants revenge, the other wants justice. But only one can survive such an unequal fight.

In the late-80s and early-90s, two prosecutors went after the mob in Sicily. Archival footage, gruesome photographs and new interviews are shown.

Docu-fiction that tells the story of Libero Grassi, the months in which he broke the silence, the silence in which he found himself isolated, until he became an easy target for a mafia clan.