Toughest Man in Arizona: Marshal Landry captures outlaw Girard and bringing him in finds a woman and two children, the only survivors of an Indian attack. Later, transferring the prisoner his brothers free him. Then a stage is robbed of a silver shipment by Girard and his brothers. Examining telegrams gets Landry a confession from Girard's girlfriend. The telegraph line has been tapped and the telegrapher is the supposedly dead husband of the woman he brough in. Now knowing Girard's location he sets out after him.