The document tells the story of gang violence in the City of God slum in Rio de Janeiro from the 1960s to the 1970s. It follows several characters including Li'l Zé, a rising cocaine dealer who gains power through fear, Knockout Ned who joins a gang, and Rocket who works as a photographer documenting the escalating gang warfare between factions. The violence culminates in Li'l Zé being murdered by rival gang members after being humiliated.