 Fred s cousins, Tumbleweed and Mary Lou Jim, come to visit him. The flamboyant rich cousin asked Fred to guard his ranch in the desert while he s away in Eurock, without letting him a choice. The Flintstones and the Rubbles go to the Tumbleweeds dude ranch, where Fred and Barney are acting like real cowboys. At one point, on a Dino-horse ride, the men get lost and get into a Western ghost-town. Little they know that they are in a middle of a movie set... And thinks that the actors playing in it are real cowboys...and Indians.