John Mitchum arrives in Sagegrease straight into a heap of trouble. Someone is stalking him. To get some answers he must ride the long trail to Black Valley and towards his own past. The race is on. Who will get there first? Mitchum must contend all the way with Turkey Joe Mulligan and his vicious gang of outlaws. But there are others with a stake in the eventual outcome: the rich owner of the Quarter Circle and the mysterious stranger Challoner. It's payback time for somebody, but who?