The Flintstones in Viva Rock Vegas

In this live-action prequel to the 1994 comedy hit, THE FLINTSTONES, the history of the two Stone Age couples are explored with cartoon-like comedy. Their fateful unions begin when quarry workers Barney (Stephen Baldwin) and Fred (Mark Addy) meet Betty (Jane Krakowski) and Wilma (Kristen Johnston) at a Bedrock burger joint. Betty is a bubbly waitress, and Wilma, as it turns out, is a poor little rich girl who has run away from the prospect of a loveless marriage to once-wealthy Chip Rockefeller (Thomas Gibson). Desperate to marry Wilma for her fortune, the scheming Chip offers the newly-in-love Betty and Barney, and Wilma and Fred, an all-expenses-paid trip to his Rock Vegas casino hotel, planning all the while to get Wilma back into his clutches. (official distributor synopsis)