Deputy U.S. Marshal Spurr Morgan’s ticker isn’t what it used to be. After he suffers a heart attack on the job‚ the Chief Marshal convinces him it’s time to step down. When Spurr asks for one last assignment‚ the Chief sends him to bring a prisoner back to Denver from the Medicine Bow Mountains. The mission seems routine for an old hand like Spurr‚ until he discovers that the criminal in question is his old nemesis‚ Boomer Drago.