In the 1950s, in Louisiana, the smart populist, manipulative and wolf hick Willie Stark (Sean Penn) is elected Governor with the support of the lower social classes. He joins a team composed of his bodyguard and friend Sugar Boy (Jackie Earle Haley); the journalist from an aristocratic family Jack Burden (Jude Law); the lobbyist Tiny Duffy (James Gandolfini); and his mistress Sadie Burke (Patricia Clarkson), to face the opposition of the upper classes. When the influent Judge Irwin (Sir Anthony Hopkins) supports a group of politicians in their request of impeachment, Stark assigns Jack to find some dirtiness along the life of Irwin, leading to a tragedy in the end.