The kids make a float using Helga's dad's money.
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.
Tour de Pond:
History 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 Phil out of winning years ago. Will the good guys win this time?
The teachers are on strike, so there's no school! Arnold and Gerald are over the moon until they find out they'll have make up the missed days in summer school. Suddenly, it's time for action!
Eugene Goes Bad:
Eugene is gutted when he finds out that his favourite movie star doesn't do his own stunts. Arnold tries to cheer his mate up.
What's Opera, Arnold?:
Arnold and the gang go on a trip to the opera and have grand, musical dreams of their own.
Clear the lanes! Helga's bowling against Arnold and Gerald! The stakes are high, so the boys bring in Coach Wittenberg to help with their game. But that only makes things worse...
Arnold and Gerald stumble upon an old pair of glasses which once belong to a deceased boarder named Four-eyed Jack. Now they're on a ghost hunt through the boarding house, and there's no turning back.
Hall monitor is a big responsibility, so when Helga passes the job down to Phoebe, she also gives Phoebe a crash course in "How to be Tough." But Phoebe learns the lesson a little too well...
Harold's Bar Mitzvah:
It'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?
Imagine a romantic triangle between Helga, Stinky, and Arnold! Helga hires Stinky as her boyfriend to make Arnold jealous. But the plan backfires, and now Stinky is getting help from Arnold to win Helga back!
Crush on Teacher:
Miss Slovak is sick, and Arnold has a major crush on Miss Felter, the substitute teacher. But what will he do now that Gerald has found out that Miss Felter has a major crush on Arnold?
Arnold follows in his Grandpa Phil's footsteps and competes in the annual block party eating contest. After much munching, Arnold goes stomach to stomach with eating legend Seymour "The Disposal."
Rhonda fails her eye test and has to wear glasses, a major fashion no-no in her books. Immediately, she is labeled a geek and hangs out with the geeky kids.
Arnold puts Grandpa Phil through his paces as he trains to take on his old Chinese Checkers rival, Robbie Fischer.
Miriam decides to visit her mum because Big Bob and Helga are on holiday at the same time. What that means is that father and daughter must spend some "quantity time" together. Problem is that both of them just seem to rub each other up the wrong way.
The High Life:
Gerald gets in over his financial head selling a sure-fire product.
Arnold gets caught in the cross fire of Rhonda and Nadine's argument.
Arnold and the rest of the fourth grade take on the might of the unbeatable fifth graders in a game of touch football. Who'll win this match of brains vs. brute strength?
Gerald Moves Out:
Being the middle child in his family, Gerald is feeling so neglected. So he decides to move into the Sunset Arms, where he learns that living alone isn't what it's cracked up to be.
Arnold and Gerald go around the city following "Porkpie," a mysterious man caught on film. They suspect, because of the clues, that Porkpie and his accomplice are planning to kill "Marty," who turns out to be Mr. Green.
In this variation of "The Tell-Tale Heart," Phoebe plagiarizes from a poetry book and uses one of the poems as her entry in a poetry contest. She wins, with her prize being a trophy resembling poet Emily Dickinson. Then, the trophy haunts Phoebe into confessing.
Arnold Saves Sid:
After Arnold saves Sid from an injury, Sid devotes himself to paying Arnold back with unending kindness.
Arnold and Gerald bunk off school, but their day is ruined by their fear of being found out.
Gerald and Arnold get on the case when Timberly loses her Barney-esque doll.
The new girl is teased at school by Helga and the other girls, but she's soon accepted by everyone.
An organ grinder's monkey kisses Helga, who's convinced she has caught "monkeynucleosis."
Gerald and Arnold do a spot of fishing, determined to catch the pond's biggest fish. The legendary "Big C'sar"!
Schoolyard tradition has it that on the first Monday of June each year, the fifth graders throw the fourth graders into trash cans. So, Arnold and Gerald try to make a run for it. As more people are thrown into trash cans and the fifth graders know all the routes, Arnold and Gerald find out eluding the fifth graders is harder than they thought.
After Arnold accidentally kills Eugene's fish with a yo-yo, Arnold must do something to make up for it.
The Big Scoop:
Arnold and Gerald compete against Helga in the newspaper, but they find out that Helga is adding fake information for her newspaper.
When Harold is walking in the street, he finds a kitty that belongs to an old lady and he takes it, but then everybody appears, and Harold has to surrender the kitty to the old lady.
Helga's Love Potion:
Helga drinks a potion to lose all feelings for Arnold.
Gerald's secret is revealed; he doesn't know how to ride a bike, so Arnold teaches him how.
Save The Tree:
Arnold and the gang must stop Big Bob from chopping down the oldest tree in town.
When the kids make their new teacher, Mr. Simmons, quit his job, the replacement makes them realize what they lost.