The Flintstones - Scheming Cliff Vandercave and his slinky assistant Miss Stone plan to steal a fortune from Slate and Co. by promoting Fred Flintstone to the executive suite and letting him take the rap. The Flintstones In Viva Rock Vegas - Meet the Flintstones--before they were the Flinstones--as Fred Flintstone, the boy from the wrong side of the rocks, courts beautiful young heiress Wilma Slaghoople. Along with best friend Barney Rubble, and his future fiancee Betty, Fred and Wilma head off for a fun weekend in Rock Vegas, the hottest rock resort in the modern Stone Age world.