 Ex-Marshal Cliff Mason arrives in Mesa City just as the Town Marshal is killed. He plans to keep moving but after a confrontation with Sheriff Cronan he decides to take the job and stay. Cronan brings in gunman Duke Allison to kill Mason but when Mason saves Allison from a saloon gunman, Allison joins up with Mason. The two now have a battle to clean up Mesa City as Cronan outranks Mason and also has the Judge on his side.