The time is our own, when rustlers have given way to drug-runners and small towns have become free-fire zones. One day, a good old boy named Llewellyn Moss finds a pickup truck surrounded by a bodyguard of dead men. A load of heroin and two million dollars in cash are still in the back. When Moss takes the money, he sets off a chain reaction of catastrophic violence that not even the law—in the person of aging, disillusioned Sheriff Bell—can contain.