When legendary gunfighter John Locke is hired to ride shotgun on a fat payroll wagon bound for Turnback Creek, Montana, it's more than a job. It's a chance to reunite with his old riding partner, ex-Marshal Dale Cooper. The pair go back a ways, and though Coop no longer wears a badge, he wants to hit the trail one more time. But the going is not easy. There are sidewinders in the shadows, ready to pilfer the loot for themselves.