The Flintstones and the Rubbles take up Fred's rich cousins, Tumbleweed and Mary Lou Jim, on their offer to take care of their ranch while they go on an ocean cruise. Having gotten lost on the ranch, Fred and Barney stumble onto a nearby film location, where they are chased by cowboys and Indians.

Receiving a pay cut after thirteen years at the quarry, Fred decides to quit and become a bus driver. With Barney as co-pilot, Fred delivers fifty kids to school, a nerve-shattering experience. Not wanting to let the job get the better of him, he dutifully picks them up again but mis-delivers them home.

When his neighbors' domestic fights suddenly end with the disappearance of the wife, Fred suspects Alvin Brickrock of foul play. After reading a detective magazine, he becomes convinced that Brickrock is really Albert Bonehart, wife-murderer.

Needled by Wilma about his lack of romanticism, Fred takes his wife on a second honeymoon to Rock Mountain Inn, accompanied by the Rubbles. When the Flintstones learn that the official, Judge Wedrock, who married them was never licensed, Wilma takes advantage of the situation by making Fred court her all over again.