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Everything goes wrong when Wilma plans a surprise birthday party for Fred. Without going into great detail over the caliber of disaster attending this event, be it noted that Barney is ordered to keep Fred out of the way while the party is being prepared--and as a result, both Fred and Barney turn up missing on the big night! Conspicuous by her absence in this final episode of The Flintstones' third season is baby Pebbles; that's because the episode was produced before Pebbles' "birth", but held back for broadcast until season's end.