Set in time before the cartoon series, when Fred Flintstone and Barney Rubble are confirmed bachelors in the prehistoric town of Bedrock and Wilma Slaghoople and Betty O'Shale are the single women Fred and Barney try to woo in a romantic getaway to Rock Vegas, while dealing with meddling from Wilma's socialite mother and competition from tycoon Chip Rockefeller.

A dour businessman is confronted by his eight-year-old self and has to come to terms with all of his unrealized dreams.