In order to prepare for the new baby, Fred and Barney rehearse taking Wilma to the hospital. Then the real thing happens and Wilma gives birth to a baby girl and names her Pebbles.

Fred gets mad with Barney's ventriloquist joke he pulled on him that Pebbles could speak. Later, Barney comes over and calls a truce with him and he get himself and Fred tickets to a big wrestling match, so Fred calls a babysitter to watch Pebbles, but she comes over and parties instead of baby-sitting Pebbles. So Barney suggests that he and Fred sneak off with Pebbles to the big wrestling match that Wilma and Betty are watching on television.