After she hears D.W. talking to her imaginary friend, Muffy tries to find her own.

When she is un-invited to Catherine's sixteenth birthday party, Francine tries to to make it the worst party ever.

George is concerned about Fern when she falls into a state of sadness, but doesn't know why. Wanting to get to the bottom of the mystery, he enlists Buster Baxter to investigate.

Buster has to find someone else to hang out with while Arthur is on a weekend trip.

Bud Compson continuously wins against D.W., so she suggests a game called Throw the Hat, in which she accidentally breaks Dad's Froggy.

When D.W. and Bud are too short to go on a roller coaster, they try to trick the ticket taker into letting them get on.

After wishes for snow and cupcakes come true, Buster, Francine, and Binky are convinced that George has Wish Mojo, and put him under incredible pressure to use his new Wish Mojo to wish for even more snow.

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Muffy is sad to discover that one of her ancestors worked as a maid for one of Binky's ancestors - a lord. Upon further investigation, Muffy finds out how that maid got promoted to a business manager.

Arthur is umpiring a baseball game against Mighty Mountain and he has to decide whether Buster properly scored a home run.

Timmy is outraged when he discovers Tommy was born two minutes before he was, leading to Tommy acting like a superior to Timmy.

Ladonna is cast an important role in an upcoming school musical, and Muffy lends her a dress for the rehearsal.

After believing a false science show, Buster decides to never believe in anything without proof again.

One Ornery Critter - Buster is tasked with taking care of his aunt's dog Carrotcake, but she dislikes Arthur, which concerns him, as he believes that it will sabotage his position as being universally loved by dogs.

Francine needs money to buy some new cleats, so she takes a job as Muffy's personal assistant.

Muffy and Lydia join forces to topple a snobbish and unpleasant beauty queen.

When Rattles and his mother are invited to stay at her boyfriend's house for a weekend, Rattles must learn to get along with his two kids.

D.W camps out in the backyard and learns that doing such a thing can be an adventure in its own right.

A powerful hurricane hits Elwood City. Ladonna's dad is called up by the Army Corps of Engineers. Muffy relocates to a shelter, while Arthur struggles to reunite lost pets and owners. And Brain seeks the help of a therapist to help him manage his anxiety.

After hearing a slideshow on the Great Depression, Arthur begins to worry about the amount of money his family seems to be wasting through usage of water, electricity and lawn mowers.

D.W saves Tommy and Timmy from a fall, and they decide to repay her, much to D.W's annoyance.

Arthur is embarrassed about having to go see D.W's spring pageant, which he believes to be a waste of time.

D.W is waiting for her new playground to be built, and all she has to play with is the box that it came in.

Brain, D.W and Bud venture into Brain's brain after neither can remember where they can find the last Easter Egg in the Easter Egg Hunt.

Brain plans on seeing a meteor shower. He thinks he is cursed since every year something goes wrong and cannot see it.

Sue Ellen is dismissive about maths until she runs into a problem her artistic vision cannot solve.

Sue Ellen meets her pen pal but he is more interested in fashion than world culture.

Arthur gets a Mutant Muck Monster as a gift, which he later learns is worth two million dollars unboxed, but it has fallen into the D.W.'s hands.

After Binky wrecks the 18th hole at a miniature golf course, Muffy, Buster and Binky attempt to create a new 18th hole.

Carl agrees to play the accordion for George's puppet show reenactment of Goldilocks and the Three Bears for the local preschool class.

Buster enlists Binky's help as a method to prevent him from gorging cookies at a constant rate.

Arthur and his friends are moving into the fourth grade, which Muffy and Francine are concerned about. Meanwhile, Arthur and Buster have their sights set on being in the fourth-grade class taught by the 'cool' new teacher.

Aria, a silent girl in Mr. Ratburn's class, finally gets a chance to speak when she is appointed a school news anchor.

Binky's grandparents miss his big soccer game, and so he attempts a reenactment of the event making video postcards just as Buster did when he left with his dad.

Arthur and his friends believe that Mr. Ratburn has a secret identity.

When Buster and Ladonna bond, Arthur feels left out.

Pal's cousin Dr. Yowl whisks Pal, Kate and Mei Lin away on an adventure through the solar system in his kennel.

When George's giraffe puppet Wally goes missing, Fern and Binky war over who can find him.