The Flintstones and the Rubbles visit the Bedrock World's Fair, where they visit a time machine exhibit and travel to various times of the future.

The Hatrocks come to visit the Flintstones after they declare their feud over, and wind up overstaying their welcome. The Flintstones then recruit their neighbors, the Gruesomes, to scare the Hatrocks away by performing "bug music".

After visiting luxury apartments, Fred decides he wants to live there, so he moves with Wilma and Pebbles. In order to pay for the place, Fred takes a job at the apartment complex moonlighting as a janitor. Fred finds that working two jobs is too hectic, and when Fred's boss, Mr. Slate, moves into Bedrock Towers, he must try to hide from Mr. Slate that he is moonlighting.