When cowboy Clay Jared signs on to ride for the Circle V Ranch, he soon discovers his boss, Jag Van Buren, has his sights set on buying the smaller Flying B Ranch. In order to force a sale, he has its owner murdered, cowboys killed, and cattle run off, leaving the widow Kate Beckett and her daughter at his mercy. Jared and another cowboy, Frank Dunn, can’t stomach the injustice so they offer their guns to the Flying B Ranch. When that happens it puts the two of them in the middle of a battle to the death. That’s when the bullets begin to fly and the bodies begin to pile up in Copperhead Moon.