Sergeant Murphy's got his hands full with runaway imaginations. Couscous is the best detective in North Africa and he's on the trail of Pepe Le Gangster and his "dirty rats." Father Cat takes Huckle and Lowly on their first fishing trip hoping it will be as magical as his own.
Huckle and Lowly buy a special cuckoo clock for Mother Cat, but because Huckle's bike bell doesn't work, he has an accident and the cuckoo clock breaks. Despite his talkative Irish forefathers, Patrick O'Swine can't utter a word. The gang goes skating on Grouchy Mr. Gronkle's pond, and when the old koot sees them on his property, he hurries to shoo them away.
Huckle and Lowly experience the life of a firefighter when they 'join the force' for the day. Manuel breaks his mother's cooking pot so he and his friend Pedro go to the market to buy a new one. Rudolph Von Fluggel takes Lowly and Huckle in his hot air balloon and they're soon floating over Busytown - but without Rudolph.
Mr. Raccoon is bored with the same old thing everyday so he leaves Mr. Frumble in charge of his restaurant while he goes in search of a change. Mario wants a gondola so he can paddle romantic couples around Venice, but instead he owns a big clunky melon boat. Hilda babysits for Pig Will and Pig Won't and she does her best to fill the day with fun, but Pig Won't just wants to sulk.
Huckle's off to do Mother Cat's shopping for the first time when he forgets the list. The Police Chief gives urgent orders to Sneef and his assistant Sniff - they must hurry to Nice. Huckle and Lowly camp in the backyard but after Kenny tells them a ghost story, they're sure they see a huge claw in the shadows.
Instead of picking up his pickle car at Mr. Fixit's, Mr. Frumble mistakenly drives off in a bulldozer. Ernst wants to be with Heidi on the rescue patrol, but he isn't a very good climber. Billy Dog, a new kid in school, has everyone scared because of his gruff manner.
Hilda's the new playground monitor but because of her strength she's afraid she might hurt one of the little kids. Professor Dig makes a great discovery - an Egyptian mummy - and he hurries to bring it to the Cairo museum. Huckle and Lowly search the beach for buried treasure, but all they dig up is junk.
The traffic light Mr. Fixit 'fixed' causes a big pile up so he offers to repair all the cars. Maria and Frederico want to throw a coin in the Trevi fountain for luck. Bananas offers to watch Turnip Goat's bananas while she unloads her truck.
Huckle, Lowly, the Three Beggars and Mr. Frumble are accidentally launched to the moon in Mr. Fixit's home made rocket. Pip Pip comes to London hoping to work for the Queen. Bananas wants to buy bananas so he hurries to the harbour hoping to work on the banana cargo ship that's in port.
After Sally, Lowly, and Huckle help Mother Cat make an apple pie, Lowly's yodeler hat is missing. Hans loves plumbing but because he always comes home wet, his wife takes him to apply for a dry windmill keeper's job. Hilda plays matchmaker for Bruno and Ms. Honey by planning a wonderful tea party.
When Huckle has to get his tonsils out, Lowly stays with him in the hospital. Cucumber and her assistant Pickles are terrified of their new assignment - to get pictures of lions. All the kids and Miss Honey go up river for a picnic.
Sergeant Murphy's got the day planned - a drive and a picnic in the country with his family. Everyone knows chimney sweeps bring good luck, but it looks like Schmudge left his luck at home. Hilda's going to babysit the kids on the Cat Family's vacation to the seaside.
Everybody's building boats for the big Busytown Regatta, and Mr. Frumble's all excited - he just loves boats. Schtoompah and his friend Umpah dream of playing music in the town orchestra. It's the first annual soap box derby and all the kids build marvelous racers - everyone except for Sally.
Huckle and Lowly keep missing the Big Stories around town. Pepe and his gang of Dirty Rats escape from prison. Mr. Frumble volunteers to help around the fire station.
Sprout Goat's really disappointed when he can't go on a field trip to the Hydro-Electric plant. There's been a terrible theft in Paris - Madame Dog's famous pies have been stolen. After Father Cat smashes his headlight on some junk in the garage, Huckle and Lowly help him clean up once and for all.
A class lesson comes to life as Huckle and his classmates learn about the Olden Days of Busy Town. Cucumber and Pickles arrive in Japan to take pictures of the famous noodle maker Chef Sato. Mr. Fixit takes the scouts camping to rough it in the wilds.
Huckle, Lowly, and Sally decide to build a raft. On a royal trip to Australia, the Queen's jewels go missing. A magazine article inspires Hilda and she decides to direct her own play.
Rudolph Von Flugel takes Huckle and Lowly up in his airplane. The Pigs celebrate their anniversary by throwing a costume party on a Lake Geneva steamboat. Mayor Fox has invited the Mayor of Workville to dine with him at Louie's restaurant.
Huckle, Lowly and Billy Dog are having fun playing around at the Busytown observatory. Sneef and Sniff arrive in Russia to guard a diamond framed painting. After being helped himself, Mr. Frumble decides to get a job helping other people.
Everyone in Busytown's getting ready for the big Hospital bake sale. Detectives Sam and Dudley are called upon to find out who's stealing groceries at the big Los Angeles supermarket. It's Bananas Gorilla's first day on the job at Scotty's garage and boy does it start off bad.
Overworked Sgt. Murphy gets "help" from a deputy just out of the academy. Pepe le Gangstaire and his Dirty Rats escape from prison. Huckle and Lowly are hurrying out the door when Mother Cat asks them to deliver cookies to the new family on the block.
A huge storm is on its way to Busytown. While on a photo shoot in the Canadian Rockies, Cucumber and Pickles must chase a runaway supply car. Sally's off to kindergarten, but she'd really just like to stay home and make puppets with Mother Cat.
There's a big show in town, and Bananas Gorilla gets a crush on Ms. Coconut. The nefarious jewel thief Lady Cheetah strikes again. Sally Cat is going on a trip all by herself to Sand Dollar Beach
Father Cat is supposed to review the Grand Hotel for his travel agency. Pepe and his Dirty Rats are out of jail, and disguised as humble servants. Father Cat wants the family to spend more time together, so they all go on a ski trip.
While climbing a tree to get Huckle a juicy apple, Lowly falls and breaks his leg. The day Cucumber and Pickles arrive in Machu Pichu to photograph the 10 golden rings. Huckle and Lowly are going to pet-sit Hilda's pet parakeet Penelope.
To earn money to buy a stereo system, Huckle get a job delivering newspapers. It's the big Rio Carnival and Cucumber and Pickles are there to capture everything on film. Humperdink the baker is raffling off 100 donuts.
Knights and a bucketman are a major occurrence in Busytown and the life of cave pigs is featured.
Billy Dog gets his own glasses for the first time, Cordelia debuts and Lowly Worm takes part in a circus.
A big dare takes place, Oliver gets problems with his sandwich and Pig Will and Pig Won't are introduced.
A big birthday party takes place in Busytown, Martha reads her first book and one gets locked out.
Father Cat does a new job, the story of America being discovered is featured and Mr. Grankle's friends are introduced.
Denys go to camp, Peasant Pig gets his own gifts and Little Fixit, the sister of Mr. and Mrs. Fixit is introduced.
A school dance takes place, The story of the Greek Olympics is featured and Hilda takes president.
Mr. Frumble's brother is introduced, the Viking pigs are introduced and a wedding takes place in Busytown.
A tough test takes place, the story of the discovery of the first pyramid is featured and a big date takes place.
One of Busytown's residents gets an award for being the inventor of the year, Macaroni Polo is introduced and Lone Wolfe is at a lighthouse.
A big riddle race takes place in Busytown starting at the Fire station (with the riddle "When things get really hot, we'll bring you some water") and ending at the Observatory (with the riddle "When it gets dark, look up and watch the show"), the story of the first balloon (a.k.a. Montgolfier) is featured and Billy Dog loses a meteorite from the observatory and tries to find and return it.
Wolfgang, Benny and Harry open a big amusement park, but having trouble in the process, the story of the first bridge is featured (caused by a toppling tower that lands on the river) and the class has to take photos of their families, but experiencing many problems and Huckle finally succeeds in taking the best picture.
A book goes missing, P.J. Pig does his best and Vanderbuilt gets new shoes.
A new gentleman comes, a painter does some amazing work and Dennis has his best day.
A trip back in time takes place and P.S. Pig gets a new friend.
Mr. Fixit causes havoc with his new magnet machine that gets out of control and attracts anything made of metal, Sniff and Sneef solve a voice problem at a European Opera and an eventful day occurs in the lives of Lowly, Huckle, and Father Cat.
Peter visits, the story of the first skis takes place and some stage fright occurs.
Peng gets a signal and Mr. Frumble has his own birthday party.
Bananas Gorilla acts as a magician, Hilda acts as a magician and the story of the first horseless carriage is featured.
The story of Daylight Savings Time is featured, Eager Beaver makes a clever game and Mr. Frumble has his own car wash for his Pickle Car.
Stanley does some of the best photographing and one gets lost in the swamp.
Mr. Fixit invents a submarine and Lowly and Huckle give it a test ride, Little Cahuchu discovers a tree with magical bouncing sap and Mr. Bean opens a drive-in restaurant.
A big Christmas present comes to Busytown, Abe and Babe get a Christmas lesson and Sally Cat gets her Christmas Dream.
The Cat family goes on a big car trip, Earnest introduces his dish you can eat and cousin Ross is introduced.
Scotty operates a gas station, Cucumber succeeds a mystery when Niagara Falls stops flowing and it is blocked by Beaver Sweet Tooth's gang and one helper gets another helper.
When there is a misprint in The Bugle, the townspeople think that the sun will disappear for 360 years, Toula and her father catch a gold necklace in their net and Huckle, Lowly and Sprout participate in a pumpkin contest.
Dennis gets a royal game and progress takes place, Mr. Fixit invents a mole machine.
Bananas Gorilla gets his superstitious bananas and a drive-through theater opens.
It's Busytown Day, and a delighted Hilda, and a not so delighted Huckle are chosen as King and Queen. They will have the honour of riding on Mr. Fixit's fabulous float. Hilda's got her own ideas of what the theme should be, and they're not the same as Mr. Fixit's. And when Huckle gets sick it looks like the parade's over... until Lowly pulls it all together and the parade is a success.
There's going to be a big race in Busytown, and the first prize is a neato bike–and everyone wants to win, so much so that the competition in Busytown gets a little too fierce. Billy Dog and Huckle Cat are both sure they're going to win, and their friendship is put at risk... until during the race they both learn that being friends is much more important than winning a silly race.
All the big kids are playing basket ball, and Sally and Robbie want to play too, but they're a little too small to compete. Lowly and Bananas Gorilla give the little kids some coaching and they learn to use their smallness to their advantage... and it's a good thing too, because they're needed for the big game against Workville.
When renovations are required after a fire, grouchy Mr. Gronkle must look for some place to stay. He's overjoyed when Sally offers the Cat Family house as his home away for home, and does Mr. Gronkle EVER move in. By week's end the cat family's exhausted, but when he's gone, they find the house almost too quiet, and they are delighted when Mr. Gronkle invites them to a big thank you dinner at his house.
Huckle, Lowly, Hilda, and Sally come to the realization that P.S. Pig and Mr. Frumble are two adults in Busytown who are alone, so the kids work to get Mr. Frumble and PS Pig together––not an easy task. Hilda makes a to-do list and when the kids are through, P.S. Pig and Mr. Frumble are certainly together––when they fall into the pond.
There's a new neighbour moving to Busytown, and she's moving into the old spooky house. Huckle, Lowly, Billy, and Hilda become convinced the neighbour is a witch because she keeps disappearing and popping up in different places. But she's not a witch... just a twin, and that explains everything... or... does it?
On a particularly busy day in Busytown, Mr. Gronkle gets fed up with the hustle and bustle and the NOISE. So he decides to move to the country. Huckle and Lowly are sad to see him go. Busytown just won't be the same without him. But even out in the country Mr. Gronkle's not happy, especially when it rains, so he sneaks back home. And when Huckle and Lowly see someone in his house, they think it's a robber, and that's when things really get noisy.
It's spring, and while playing soccer, Huckle knocks a bird's nest out of a tree. He decides he can't leave the baby birds alone, so he takes them home to raise them until they are old enough to fly. But... how do you teach a bird to fly? All you need are a couple of feather dusters, a lot of patience, some luck, and a great deal of love.
There's going to be a big bikeathon in Busytown to raise money for charity, and Billy wants to raise a lot of money. Except when Billy's bike is run over it looks like he's out of the game, unless he can earn enough money to buy a second hand bike. As the big day approaches, Billy keeps track of his savings, but he's still short. And that's when to his great surprise, all his friends chip in and Billy gets that bike. Boy... it sure is nice being able to count on your friends.
The substitute teacher, Mr. Tough, has a very special field trip for the class: to the ancient Stone Circle. But the field trip is less than perfect when his entire class disappears. The kids have found a way into a series of ancient caves and they realize the Stone Circle used to be someone's home. When Mr. Tough finds them he's delighted. They've solved the mystery of the Stone Circle.
While playing pirates, Huckle, Lowly, Billy, and Hilda discover a message in a bottle. There's someone out there who's shipwrecked. They tell Mother and Father cat about it, but they think it's just part of the pirate game, so the kids head to Wolf Point Island on their own. Sure enough there's a sailor out there, but when the kids arrive, they are shipwrecked too. So it's a good thing they left a message in a bottle of their own for Mother and Father Cat to find and they come to the rescue.