When Arthur and Buster try to take the bus to Arthur's swimming lesson, they fall asleep and end up in a strange part of town.

Arthur finds a solution above ground when he cannot find a place to be alone and read his new "Bionic Bunny" comic.

One day, when Arthur's friends are too busy to play with him, he uses his imagination instead.

Buster goes away for a month, and Arthur becomes sad and confused when he does not receive even one postcard from him.

Arthur is resentful when he is not allowed to go sledding with his friends until after the roads are plowed because his sister, D.W., is too small to wade through the deep snow.

Arthur's mystery envelope: What can possibly be in the sealed envelope Mr. Ratburn sent home with Arthur? ; Arthur makes the team: It feels as if it's going to be a long season for Arthur as he struggles to sharpen his baseball skills ; Arthur accused: Arthur collects quarters to buy a dalmatian for the fire house. But when he is accused of stealing the money, Buster must come to the rescue and solve the mystery ; Arthur and the lost diary: Sue Ellen...

After hearing about the exciting summer vacations of his classmates, Arthur decides to write an embellished version of his own summer experiences.

Even though her brother Arthur says she is too little to help with the upcoming wedding, D.W. proves she is just the right size when disaster strikes during the ceremony.

Third-grader Arthur is amazed when he is chosen to be in the school spellathon.

Arthur's little sister wants to wear glasses like her brother and tries to prove she needs them.