In 2007, Italian police raid the villa of Sicilian boss Salvatore Lo Piccolo and find a typed list of rules governing Mafia conduct, a code its members call sacred. The film uses that document as a spine, walking through each commandment (no meeting other members' wives, no frequenting bars or clubs, always being available when summoned) to explain how the organization actually disciplines its own. Interviews with investigators, former members, and journalists fill in the history behind the rules, from the founding codes of honor in nineteenth-century Sicily to the omerta that has protected bosses through decades of prosecution. Archival photographs, courtroom footage, and news reports trace how the Mafia adapted its internal law as police pressure and informants chipped away at its secrecy. The result is less a crime chronicle than a look at how a criminal organization governs itself, using loyalty, silence, and ritualized discipline to survive when written law fails it.