Fred forms a barbershop quartet to compete on the ""Hum Along With Herman"" television show, and in the process discovers that Barney is a natural lead tenor. The catch is that Barney can sing only when he's in the bathtub.

Betty and Wilma employ a ""sleep-teaching"" method to try and turn Fred and Barney into perfect spouses. The plan goes awry, and the foursome are ultimately arrested as thieves. After pleading their cases in court, the wives are sentenced by the judge to twenty days of serving their ""victimized spouses"" breakfast in bed.

In a jewelry store to buy a birthday gift for Wilma, Fred and Pebbles unknowingly encounter jewel thief Baffles Gravel, who plants a priceless diamond bracelet on Pebbles. After finding the hot ice, Fred and Wilma try to get it back to the store before Pebbles ""crime"" is discovered.

Fred and Barney join an exclusive ""fathers club,"" which offers hen-pecked husbands the chance to play poker under the guise of taking their children for afternoon walks. Fred has to do some fancy switching, though, when he rushes home one day with the wrong infant.

Attending a premarital bachelor party for a Lodge buddy, rowdy Fred and Barney start dancing with the chorus girls in a nightclub, unaware that they are being filmed for television's ""Peek-A-Boo Camera."" The boys do everything possible to keep their wives from seeing the show when it airs on television, and almost succeed.

Vacationing in Rockapulco, Fred encounters international jewel thieves who plant a million dollars' worth of stolen diamonds on him to carry across the border. The deception is detected and Fred is offered a reward, and is subsequently arrested back home for failing to declare the reward money!

Fred inherits a shack in the hills from his hillbilly relatives, and with it a hundred-year-old feud with the Hatrock clan. Fred settles the feud by rescuing a Hatrock baby, by then starts it anew by insulting the Hatrock matriarch.

Disguising themselves to gain entry into the all-male Water Buffalo Lodge meeting, Wilma and Betty argue that wives should be allowed to attend the meetings. But after going through painful initiation ceremonies as new members, they decide they are better off staying home.

The razing of the Honeyrock Hotel reminds Wilma and Betty of their courtships while working as hotel waitresses, at which time they mistook hellhops Fred and Barney for young millionaires.

Fred has a bowling accident and becomes involved with mad doctors who experiment in personality transference.

Trying to be neighborly, Fred and Barney offer to babysit for the Gruesome family, who've moved into Tombstone Manor next door with their weird kid and a menagerie of creepy critters.

On a visit to the Bedrock World's Fair, the Flintstones and the Rubbles take a ride in a time machine that sends them into the future with stops at ancient Rome and Arthurian England, and encounters with Christopher Columbus and Ben Franklin.

Fred frets a visit from hillbilly cousins with whom older Flintstone relatives feuded a long time ago, but the stay is a pleasant one until the hosts realize the guests aren't leaving any time soon.

During a vacation at the beach, Fred is bitten by the surfing bug and becomes a big kahuna to the young people hanging 10.