The Flintstones: Season 5, Episode 12

5 - 12: King for a Night

When the King of Stonesylvania visits Bedrock, he decides he wants to be a normal person, dead-ringer look-alike Fred is hired to fill in for him as king. The plan begins to unravel when the king demonstrates little tolerance for the outside world and Fred does not like being a king much better. When Wilma mistakes the king for Fred, more troubles begin for both the king and Fred.