In 1895, Antonio Sonoro is the latest in a long line of ruthless men. He's good with his gun and is drawn to trouble but he's also out of money and out of options. A drought has ravaged the town of Dorado, Mexico, where he lives with his wife and children, and so when he hears about a train laden with gold and other treasures, he sets off for Houston to rob it -- with his younger brother Hugo in tow. But when the heist goes awry and Hugo is killed by the Texas Rangers, Antonio finds himself launched into a quest for revenge that endangers not only his life and his family, but his eternal soul.