Guerrero, one of Mexico's poorest states, sits at the center of the drug war's worst violence, and this film follows the civilians who stopped waiting for the government to fix it. Hundreds of residents have armed themselves with machetes, rifles, and shotguns, pulled on masks, and set up their own patrols and checkpoints to police towns the cartels and corrupt police have failed to protect. The film shows the vigilantes' logic laid bare: when the state can't or won't stop the killing, people replace it themselves, community by community. Guerrero's name means "warrior," a detail the film uses to frame the irony of a region now defending itself with exactly the kind of armed force it was supposed to be free of. What's on screen is blunt: masked men with guns manning roadblocks, communities deciding who counts as a threat, and the uneasy question of what happens when ordinary people take over the job of law enforcement.