The day Chip Bennett and Weary Davidson came upon some slaughtered Flying U cows with their hind quarters skinned out, they knew that cattle rustlers were on the rampage. Then a hidden rifleman tried to shoot them out of their saddles -- a warning that something even more sinister than rustling was happening. But even shrewd Chip never suspected that Big Butch Lewis was rounding up gunmen from all over Montana in a sweeping plan to make the range a stronghold for outlaws.