Kids at school begin to make up their own languages. Arthur and Buster create "Arster-Buther", and Francine and Muffy create "Oola". George, however, feels left out because he can't understand any of it, due to his Dyslexia, so he comes up with a language of his own, a language without words.
A new line of dolls has come out. The "World Girls", figurines dressed to represent every nationality, are the new trend, and when the new superstore "World Girl World" opens, Muffy is determined to buy every single one, and brings along Francine, who is not particularly interested in it, and Sue Ellen, who has her heart set on finding only one specific doll, Pema. When she finds out that Pema was discontinued she also learns that they also canceled out Little Tibet altogether.moreless
Mr. Ratburn shows a film about perspective and then assigns the class an essay about it. Arthur and Buster are disappointed to have homework on the weekend of the big Bionic Bunny / Dark Bunny special (in which everything will be revealed), but vow to complete it before the start of the special. Arthur, however, struggles with the assignment. Mr. and Mrs. Read are celebrating their tenth anniversary at a fancy restaurant. They're dropping Arthur off for Buster's sleepover and D.W. at Grandma Thora's. But car troubles leave everyone stranded. Things seemingly go from bad to worse when Arthur and D.W. get locked in a storage room in an old diner. They're disappointed, and a bit scared, but find inspiration in an old radio drama called "Kid Carter and his Sidekick Mistral."moreless
Arthur and D.W. look for a place to cool off and end up going to (the boy that kissed D.W.)'s house and learn that Molly lives there too. Molly makes many attempts to not let Arthur into the pool, but they all wind up becoming friends. When Muffy sees them shaking hands, she goes ahead and blabs to everybody that Arthur and Molly like each other and Binky, Rattles, and gang go to stop them from possibly becoming boyfriend and girlfriend!
"It Came From Beyond"
Grandma Thora takes in a stray dog that is extremely mean. When the dog is thought to go back to the animal shelter, it turns out it's a nice dog that has had a hard time.moreless
The gang is devastated after their tree house collapses. It was the best place to hang out in the whole world! Can architect Frank Gehry get them to agree on a new design and help them to rebuild?
"Tipping the Scales"
Everyone in Arthur's chorus group is excited about their upcoming performance in Crown City. Everyone knows nothing beats that post-concert cheesecake at Finklemeyers! But when strict Dr. Fugue replaces fun Mrs. Krasny as their teacher, the gang worries -- will music class ever be fun again?moreless
George's bad day gets worse when he comes over to Mrs. McGrady's house to sing for Koko Taylor and his friends insult his quiet voice. After listening to one of the Brain's CDs, George dreams that he and his ventriloquist dummy Wally are in a blues-related adventure. He builds a guitar with his dad and gets a second chance to overcome his stage fright. Will he be able to prove he isn't a a "small-mouth" to Koko Taylor and Taj Mahal?
At a glass shop, D.W. overhears a word she doesn't know. D.W. is afraid to ask anyone what the word means, because she thinks that it causes people to break stuff. Arthur and the Tibbles warn her not to say it in front of grownups, or they will become zombie slaves (or at least the Tibbles say...). D.W. and Nadine put it to the test by having the neighborhood kid Vecita say it to her parents. D.W. accidentally says it to her mother while spying, and after apologizing to the neighbors, Mother tells her what the cuss word means. But the next day at school, all DW's friends are saying it. Here we go again...moreless
Pack your bags! Buster is going to New York to visit his dad Bo. He won't have to go alone; the Reads will be joining him.
"Postcards from Buster, Part II"
In this combination of live action and animation, Buster and the Reads enjoy all the wonderous sights of New York, including Central Park and Broadway. With his trusty video camera documenting every move, Buster is having a blast! But what happens when he and his aardvark friend get lost in Chinatown?moreless
When Francine gets sick in school one day, she is reluctant to return. Will the kids call her Barfine?
"Sue Ellen Chickens Out"
Chickin Lickin, a fast food restaurant wants to replace the gang's beloved Sugar Bowl and Sue Ellen is outraged. She organizes a protest, but will her friends rally by her side?moreless
Arthur is excited to have a new pen pal named Adil and fantasizes about what life would be like in Turkey. Unfortunately, his notions about the country are just a tad outdated. Will Arthur learn about the hazards of stereotyping?
When Bitzi and Harry break up, Buster is sad to lose his favorite baseball buddy. How can he reunite the former couple in time for the next game?moreless
The latest book about everyone's favourite boy wizard--Henry Skreever, of course--is finally in stores! Every kid in town is lining up to get it except Prunella, who's ordered a monogrammed, limited edition, coming all the way from England. She's in for a surprise, though, when they mix up her order and send a Braille version instead.
"The Secret Life of Dogs and Babies"
Ever wonder what Baby Kate and Pal are thinking? Join an adventure into their secret world, where Arthur and D.W. watch impossibly immature TV shows and silly grown-ups are often in need of rescue!moreless
Sue Ellen is the champion of the popular Internet game, Virtualgoose.com. She becomes so obsessed, however, that she starts imagining her friends as geese to be conquered! Can Sue Ellen give up Virtualgoose before she finally quacks...er, cracks?
"Best of the Nest"
Now that the gang has beaten Virtualgoose, they move onto Best of the Nest, where five geese fight to survive in the virtual woods. As the competition escalates, Brain becomes inspired to initiate a camping trip in the real woods. Will any of his friends be willing to forgo their computers for a real, live adventure?moreless
Who ruined Dad's perfect soufflé? To solve this problem, Mom and Dad listen to both Arthur and D.W.'s version of what happened -- and the siblings demonstrate some very imaginative storytelling!
"Muffy Gets Mature"
Muffy began to read Mature Miss magazines, and she began to act more mature, and finds out all her friends are too juvenile and she searches for a more grown-up experience with Francine's teenaged sister and her cool cohorts.moreless
Arthur could not resist sweets and when he gobbled down millions of sweets, a cake produced by his father was available and Arthur did not want to waste the chance, so he engulfed enough pieces to make him fall into a crazy dream... starring Mr. Ratburn as a child-eating witch, and many other insane events.
"The Big Dig"
Grandpa Dave would now only want to sleep and play checkers. Then one day Grandpa Dave shares a secret map, and Arthur and D.W. hunt for the buried treasure.moreless
When D.W.'s favorite TV show is cancelled; she makes a petition to bring it back. She gets a tour of the set, and finds out it is still cancelled.
Buster's mom announces she has a new boyfriend, and Buster thinks his mom won't have time for him with her new boyfriend.moreless
An army of lice has been unleashed on the heads of Lakewood Elementary. Now, the whole school must get rid of them before they all go insane.
"You Are Arthur..."
Hey, do you want to be Arthur for a day, Well here is a chance. You (Arthur) wake up one morning and you are going to run in a 3 kilometre race against other kids, but he must go through a training day with the Tibble Twins and D.W.moreless
Arthur is chosen to appear on the popular game show, Riddle Quest.
Arthur, Francine, Buster and The Brain dare each other to skip school for a day.
Arthur believes that Buster is sad because Buster could not bring his dad to the Father's Day Picnic to have a fun time because his dad is divorced so Arthur tries to help him by "borrowing" a father for Buster just for that day.
Flashpants! That was all that Prunella wanted and when she gets a hint from her sister, Rubella, she was excited about getting them for her birthday, but the gift was not what she suspected.moreless
"D.W.'s Library Card"
D.W. discovers that she can get her own library card and feel the power as Arthur has, but she can not write her own name. When she learns to do so and waits a week for a certain book to come in, she borrows it but never reads it because she thinks she might destroy it. Can Arthur help her out of this one?
"Arthur's Big Hit"
Arthur works hard hours of building a model airplane, and then D.W. throws it out the window to see if it can fly, and the model breaks apart. Arthur gets really mad and hits D.W., and is disciplined for it. Binky is then ordered by the Tough Customers to hit Arthur because of all his. How will he get out of it?moreless
When Buster finds an arrowhead in his yard; everyone wants to know if there are treasures in their yards. How will Arthur know if there are treasures in his yard if Mom will only let him dig behind the garage?
"The Return Of The King"
Written by Peter K. Hirsch
Storyboard by Mario Cabrera
When Mr. Ratburn's class goes to a medieval style fair, his old teacher, Mr. Pryce-Jones, comes with his class. Mr. Pryce-Jones' class wins all the games. The last contest is pulling a sword from a stone. Will Arthur prove that Lakewood is better than Glenbrook? (Glenbrook is the name of the school where Mr. Pryce-Jones' class is from).moreless
Mr. Ratburn assigns a project that involves family ancestors. Muffy and Francine turn this project into a competition to see who has the best ancestors.
"And Now Let's Talk To Some Kids"
Written by Joe Fallon
Storyboard by Stefanie Gignac
Arthur's class gets picked to be on a television show in which the Brain does not want to go on.moreless