When the legendary musical duo of Dino and Don Spumoni split up, they each move into the boarding house (unknown to each other). So it's up to Arnold and Gerald to restore harmony...
Watch Now:AmazonGerald goes to Arnold's place to meet the other residents.
Watch Now:AmazonArnold convinces the gang to go to Elk Island, where, unknown to them, two men are plotting a counterfeit coin scheme.
Watch Now:AmazonThe city is suffering from a heatwave, and whatever he does, Arnold just can't seem to get cool.
Watch Now:AmazonIt's time for Harold's Bar Mitzvah, but where is Harold? Nervous about the responsibilities of his faith, he panics and runs away. Can Arnold convince Harold that he has what it takes to be a man?
Watch Now:AmazonArnold's hat lands on the stoop of "Stoop Kid," - a bully who has lived his whole life on his stoop, and is highly protective of it. But, when it's Arnold's fault that Stoop Kid becomes the joke of the city, he must help Stoop Kid face his biggest fear - leaving his stoop for the first time.
Watch Now:AmazonHelga 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.
Watch Now:AmazonHistory repeats itself when Arnold and Gerald enter the annual toy boat race against Rex the rich kid. The same race that Rex's grandfather cheated Grandpa out of winning years ago. Will the good guys win this time?
Watch Now:AmazonTwo 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.
When Arnold accidentally ruins Eugene's new bike, he takes Eugene out on a day of fun, thinking that "Every geek deserves his day".
Arnold is okay with working with Gerald at Mrs. Vitello's flower shop after she's injured and puts Gerald in charge, but not with working for Gerald, which causes the friendship to hit a snag and Arnold quits.
When the kids complain of being bored, Grandpa tells the story of the Haunted Train. So, the kids decide to go and see if the train exists for themselves.
Arnold has a magic show and he makes a disappearing act and uses Helga as the person disappearing. Helga decides to play a trick and literally disappears. She bumps into a pole and has a dream on how the world would have been if she's gone.