The eponymous Hex was a soldier in the Confederate army until his regiment was captured and Hex made an unspecified decision that resulted in the death of all his men. Among them was his friend, Jed Turnbull. After the war Jed’s father, Quentin Turnbull, seeking revenge murdered Jonah’s family, branded his face, and left him crucified to die. Rescued and brought back from the brink of death by mystical Indian magic (twice), Hex turns to bounty hunting, convinced that Quentin died in a fire, and cursed with the unnatural ability to speak with corpses. But when the senior Turnbull reappears with a 19th century weapon of mass destruction and dark designs for the Union, Jonah Hex will finally have his turn at revenge.
Josh Brolin plays the title character and easily turns out the best performance of the film. Brolin lends Hex a quiet hateful weariness with the world,