A bitter enemy of Blue Pete, Bill Scarway, the murderous fast-shooting outlaw, escapes the Mounties to Medicine Hat-to ride, as "Trigger" Sallows, for the Diamond K outfit. Inspector Barker, determined to get the elusive Scarway, dead or alive, asks Blue Pete to help capture him. Blue Pete-his own private score to settle with Scarway-refuses, though he knows that killing and cattle-rustling inevitably follow the outlaw's trail. In the great spring round-up near the Cypress Hills the stage is cunningly set for the show-down. Scarway, ace gunman, faces for the first time on equal terms the death-dealing guns of Blue Pete.