A Classic Action Adventure of the Old West on Cimarron Strip. A family of settlers is mysteriously massacred after jumping a land claim in the Mocane Valley Territory outside Cimarron City. Of the entire Huston clan, only Rowan Huston (Leslie Nielsen) and two other family members survive. Marshall Jim Crown (Stuart Whitman) had warned the settlers about the dangers of the Indian superstitions surrounding the valley. The suspense builds, as Crown and Huston hunt down the legendary beast, determined to avenge the brutal massacre of the Huston family. In the end, Marshall Crown must face the beast alone in a life and death struggle where only one will survive.