The daily life of Arnold--a fourth-grader with a wild imagination, street smarts and a head shaped like a football.
Not looking forward to performing in Helga's "The Four Food Groups" musical, Arnold and Gerald decide to take the bus a few stops too many, but end up stuck downtown.
When Helga loses her pink book, full of love poems about Arnold on the bus, it ends up in Arnold's hands. Now Helga must get it back before Arnold figures out who wrote the poems.
An obsessed Helga steals Arnold's hat to complete her shrine to Arnold, which is hidden in the back of her closet. But, she notices how miserable Arnold is without his hat, and decides to give it back to him.
Helga is annoyed when Rhonda doesn't invite her to her slumber party - everybody assumes that "girly" parties aren't Helga's style. So, Helga is determined to prove her wrong, and gets a makeover.
Two girls from the sixth grade who are tired of the way that their boyfriends treat them, decide to take Arnold and Gerald to the school dance, but only to make their boyfriends jealous.
Arnold has a really bad day - the city is suffering from a heatwave, and whatever he does, Arnold just can't seem to get cool.
