Buster returns after a extremely long trip to bond with his father and a nervous Arthur wonders if Buster's trip made him change.

Buster feels left out having missed all the adventures since he was away. He feels that everyone has changed and they feel the same about him, so Arthur plans a party so they can rekindle their friendship with Buster.

D.W. loves school and wants to go everyday, but when Ms. Morgan starts doing fire drills she fears for her safety and doesn't want to go anymore.

Mr. Ratburn assigns partners for a project and Arthur gets teamed up with Muffy. After spending a lot of time with her, he starts to act just like her.

Sue Ellen gets partnered with Brain in another project by Mr. Ratburn. Soon he starts to be a report hog and gets on Sue Ellen's nerves.

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.

Arthur's class gets picked to be on a television show in which the Brain does not want to go on.

D.W. eats a big green potato chip and to get her off his back Arthur tells her that it's fatal and she could die. So D.W. spends this day as her last day until she finds out the truth.

D.W's mom tells the newspapers and everyone in town that story about D.W. and the green chip embarrassing her ultimately.

Someone has been writing "Binky Rules" all over Lakewood Elementary and Mr. Morris thinks it is Binky. Binky says he didn't do it, so Fern and Buster are trying to find out.

Everyone gets tickets for a concert starring the new group Binky.

Everyone has a Woogle, the popular new toy... everyone except Arthur. He think that they're dweeby, until everyone else has one.

After one of Mr. Read's scrumptious desserts makes Arthur the most popular kid in class, Arthur can't stop asking his dad to cook. Despite his dad's busy catering schedule, Arthur promises delectable desserts to anyone and everyone.

After Fern and Sue Ellen take a quiz in a teen magazine, they change the way they act. Fern turns loud and aggressive, while Sue Ellen falls back in everything.

When Binky steals Buster's joke for his report, Buster has a grudge against him.

When Buster finds an arrowhead in his yard; everyone wants to know if there are treasures in their yards.

When Mr. Ratburn's class goes to a medieval style fair, his old teacher Mr. Pryce-Jones comes with his new class. Mr. Pryce-Jones' class wins all the games.

The Tibble's watch a dangerous superhero show and imitate it. Things get out of hand when they pretend that D.W. is a bad guy.

D.W. wants money to buy a toy, so she plans to trick the tooth fairy so she can earn enough money for it.

Tommy Tibble gets sick and Timmy Tibble gets sad so D.W. and Emily pretend to be Tibbles to make Timmy feel better until Tommy is well.

Arthur and Buster show D.W. that you don't need cameras, lights, etc. to make a music video.

After everyone has told scary stories, everything scares Sue Ellen.

Grandma Thora lends her doll Clarissa to D.W. for a week. She has a lot of fun with her until Clarissa breaks.

When George brings his dummy Wally to school, everyone loves him. But after awhile, they get tired of Wally.

Francine never had a pet until Nemo comes along.

When Mom and Dad begin to fight over spilled milk, D.W. is worried that they might be getting a divorce.

Arthur notices that D.W. is not excited about her birthday. So he tells her about her memories throughout her year as a four-year-old.

Arthur is devastated that he has to clean up his room, and D.W.'s too.

The gang decides to make up another holiday for the wintertime.