When the quarters Arthur has collected for Mrs. MacGrady's charity drive mysteriously disappear, it's up to Buster to solve his friend's case.

When Arthur finds Sue Ellen's lost diary at the library, he wonders whether or not to read it before he returns it to her.

When a parent group bans a series of scary books from the local public library, Arthur and his friends devise a plan to get their favorite books returned.

When Arthur's third-grade class goes hunting for fossils at Rainbow Rock State Park, his friend Buster actually finds one, and instead of turning it in Buster decides to take it home--but he soon regrets his decision.

Fern dares Arthur and his friends to enter the poetry writing contest at the local library, but writing poems turns out to be harder than they thought.

If Arthur and Buster cannot find a way to get Francine and the Brain to stop fighting, their soccer team will never make it to the play-offs.

Arthur is looking forward to having his friend the Brain spend an entire weekend at his house, but then the Brain shows up and starts acting a little too much like the perfect family member.