Rawhide Runyan builds up a cow outfit in the Arizona Strip near the Utah border. A superb fighting man built of rawhide and whalebone, with an aversion to outlaws in general and cattle rustlers in particular. His ranch is well-known as the Double Diamond R. Slow Joe Hill, Rawhide's right-land man, is a reformed outlaw, and their fights and adventures occur in the Arizona Strip and the surrounding country near the northern end of the Grand Canyon.