Three episodes of the television program. In the first episode, everyone in the class has lost a tooth except Arthur, and when he finally gets a loose tooth, he can't make it come out. In the second episode, his dog Pal is sick, and Arthur blames it on D.W. -- or could it be the junk food Arthur's been feeding him? The third episode is a glimpse into the secret lives of Baby Kate and Pal the dog.