来自犹他州的约翰·韦斯顿协助希格斯警长对一伙镇上的牛仔竞技表演团伙进行调查,他们骗取了镇上人民的大量钱财,并秘密杀害了顶级牛圈骑手表演者。The Marshal sends John Weston to a rodeo to see if he can find out who is killing the rodeo riders who are about to win the prize money. Barton has organized the rodeo and plans to leave with all the prize money put up by the townspeople. When it appears that Weston will beat Barton's rider, he has his men prepare the same fate for him that befell the other riders.