When Lucy waits up for her daughter Chris to return from a date, the fourteen-year old girl is mightly embarrassed. Lucy promises never to do it again, but can't help herself. To not be discovered, Lucy accidentally locks herself out of the house and has to enter by the only means available; a trampoline.

Eager to ask Jerry's handsome math teacher to take her to a dance, Lucy steals the teacher's driver's license to find out whether he's married, then ends up in the teacher's fencing outfit to get the license back into his wallet.

Lucy has Harry give her a crash course in football after she volunteers to referee a game for Jerry and Sherman's league. She fails so miserably, she's chased off the field. To make up for the disaster, she offers to take all 25 players to a pro game. That plan also goes awry when a blizzard traps all the boys in Lucy and Viv's house for the weekend.

When the bank accidentally gives Lucy a check for $2,000 instead of $20, Lucy decides to hide the money in a candy box for a few days to give the persnickety banker a good scare.

Left with no one to tend the lawn, Lucy buys a sheep named Clementine to take care of the grass. Unfortunately, weather and circumstances make Clementine an unwelcome house guest, and Lucy sneaks her back to the farm. Only then is she offered $200 for Clementine to appear in a blanket ad.

After Lucy and Vivian successfully spend 24 hours in a simulated space ship, Vivian decides to deflate Lucy's ego by convincing the red-head that she has been selected as the first woman astronaut and must leave immediately for Cape Canaveral.

Lucy takes a secretarial temp job in order to afford a bicycle for Jerry's birthday. Lost in a modern office, she has disastrous contact with the electric pencil sharpener, the water cooler, and the electric typewriter. Her exasperated employer sends on out on errands when her dress gets caught in an elevator and unravels. Not wanting to deliver contracts in her unmentionables, Lucy borrows a kangaroo costume to finish her chores.

Lucy goes overboard to make the doctor she's dating believe she's as big a classical music lover as he is. Her elaborate sham was for naught; when she invites her date over, he ends up making beautiful music with Viv. He's even planning to play violin in Viv's benefit recital--until Lucy crushes his hand with the piano lid.

To save money, Lucy talks Vivian into helping her install a new TV antenna on the roof. The do-it-yourself project costs a small fortune thanks to Lucy's general klutziness, Viv's fear of heights, broken windows, new holes in the roof, and smoke damage caused by clogging the chimney with Lucy's bottom.

Viv trips over one of Jerry's toys and suffers a minor ankle injury. Upset that Lucy believes she'd sue over this little mishap, she decides to teach the redhead a lesson. Exaggerating her injury and threatening to call her lawyer, Viv lounges in bed for a week, running Lucy ragged with petty demands.

Lucy and Viv each sneak back home to fix meals for their dates after agreeing that neither would get the house to herself that night. Following the inevitable fight, the gals go to work on turning the basement into an extra room for entertaining. Unfortunately, they've underestimated the strength of the glue they're using on the walls.

Lucy plans to surprise Vivian with a new mattress and a redone room while she's on vacation, but the electric mattress Lucy bought her malfunctions (it moves around the room when the motor is on) and Lucy is forced to return it. However, Vivian returns home early and has no place to sleep, so she and Lucy have to share the boys' bunkbeds for a night.

The Carmichaels and the Bagleys are spending their first Christmas together and trouble begins immediately. Lucy and Viv argue over every single holiday tradition, especially over whether to have a traditional green or white flocked tree. Two trees and an escalation of words results in many busted ornaments and hacked-off limbs.

Lucy promises not to interfere with Chris' New Year's Eve Party. Harry agrees to chaperone as Lucy and Viv take the other kids to a hotel. While at dinner, Viv's boyfriend brings news that Chris' party is a dud and desperately in need of their help. The ladies come to the rescue with entertainment.

Lucy's sister Marge shows up, having just left her new husband Hughie. Peacemaker Lucy gets the couple back together but believes their problems stem from having not had a wedding--they had eloped. Leave it to Lucy to plan a big wedding for the next day.

Lucy protests too loudly about Danfield needing a fire department; she's named Captain of an all-woman volunteer force. With Viv's help, the group practices to be ready for their first mission. When the alarm finally goes off, they set the firehouse ablaze.

After just three days as the fill-in society reporter for the Danfield newspaper, Lucy's job is hanging by a thread. The only thing that will save it is an interview with the press-shy financier visiting town. Once she learns he had been Viv's high school sweetheart, Lucy heads down to his hotel for a scoop, passing herself off as Vivian Bagley.

Tired of her daughter Chris hogging the bathroom all the time, Lucy asks her neighbor Harry to install an extra shower for her. Not wanting to do the job, he hires a plumber to do it instead. Lucy nags the plumber so much that he quits, leaving Lucy and Vivian to finish the jobs themselves!

When one of the members of Vivian's Barbershop Quartet drops out, Lucy naturally wants to take her place. Vivian agrees, and now it's up to Lucy to learn how to sing before a big singing contest in Albany!

After Viv's boyfriend, Eddie, goes nuts over her caramel popcorn, Lucy suggests putting it on the market. The three become business partners, turning the kitchen into a gooey, sticky mess of a candy factory. They're violating zoning laws by running a business in their home, so they frantically hide the evidence before the cops arrives.

Tired of the weekly Saturday night debate with Viv and Eddie about what to do on their double-date, Lucy and Harry decided to have a quiet dinner alone. They pretend to have tickets to a Broadway show, but instead head to a new restaurant. When Viv and Eddie walk in, Lucy hides under their table and dines on their unwitting handouts.

Nervous over recent break-ins, Lucy and Viv take judo lessons for self-protection. The pair don't learn very much, but Lucy teaches what little she learned to Jerry after he's given a black eye by Sherman.

Chris needs cash for a majorette uniform so she takes a job at Wilbur's Ice Cream Parlor. On the day of the parade, Mr. Wilbur won't let her miss work, so Lucy and Viv fill in. Viv does alright as a waitress but Lucy makes a sticky mess as the soda jerk.

The fire department members are livid when Lucy fails to get the town council to pay for their new uniforms as she'd guaranteed. Her scheme to raise the funds through a newspaper drive leads to her court marshal by the ladies, a rented dump truck to haul 34 tons of paper to a nearby town, and numerous traffic citations.

Lucy calls the President to tell him about the replica of the White House made of sugar cubes built by the boys' Cub Scot troop. She actually gets Mr. Kennedy on the phone and receives an invitation to present it in person. On the train to Washington, the model is destroyed, forcing Lucy and Viv to do a quick rebuild. To get enough sugar cubes, Lucy hops off at one stop and cleans out a nearby diner's supply.

Viv regrets letting Lucy talk her into joining her for a night-school chemistry class. Lucy gets carried away trying to invent a youth serum and develops a huge ego between explosions. To teach her a lesson, Viv and the professor make her drink her own concoction, which acts as a sedative. When she awakens, she's horrified by the results of her youth formula.

Lucy is prepared to chaperone her daughter Chris and some of her school friends for a week at Sandy Cove. When Chris' school principle decides that one woman can't possibly chaperone all those girls Lucy recruits Viv to come along. While at the beach Lucy decides that the kids think that she and Viv are old foogys so they try to dress and act young, only to find out in the end that the kids would rather have their chaperones behave as adults.

Lucy and Viv are such obnoxious parents at their sons' Little League game that they're tossed out of the park. Determined to watch Jerry play, Lucy dons various disguises to sneak back in, but her big mouth gives her away every time. Viv, however, stays quiet and has more success.

The hunt is on for a butterfly Lucy allowed to escape while helping Jerry with his collection. On a dinner date with a lawyer, she leaps into action when she thinks she spots the rogue insect, resulting in chaos at dinner, the park, and eventually a court session.

Lucy talks Viv into buying a "fixer upper" boat that's barely seaworthy. When they finally get it on the lake, it slips away from it's moorings, trapping a sea sick Viv and a bossy Capt'n Lucy without a sail. Then, the leaks start springing up.