In the mid-20th century, the American Mafia was a powerful, organized criminal enterprise that exerted significant influence over the country's political and judicial systems. This documentary explores the rise and fall of some of the most notorious mob bosses, including Vito Genovese and Frank Costello, and the law enforcement efforts to dismantle their operations. Through interviews with former FBI agents and crime authors, the film provides a detailed look at the inner workings of the Mafia, the power struggles between its leaders, and the eventual decline of their influence in American society.