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 Arnold accidentally ruins Eugene's new bike, he takes Eugene out on a day of fun, thinking that "every geek deserves his day".

The kids are really looking forward to their field trip to the aquarium - especially when they remember the scary Lock Jaw from their last trip. But, when they get there, they see that Lock Jaw isn't really that scary. Arnold notices how neglected the old turtle looks, and returns later with Grandma to set it free.

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.

Arnold'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.

Arnold is asked by his Grandma to help save an old building, and then asked by Ernie to help knock the building down! Who will Arnold decide to go along with? How can he get out of this tricky situation?

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.

At the Annual Cheese Fair, Helga tries her best to keep Arnold well away from Ruth - a girl who Arnold has a crush on.

Oskar gets kicked out of Suzie's room when they get into an argument, so Arnold tries to get them back together when Oskar moves into Arnold's room.

While Helga tries to find the perfect gift for Arnold, Arnold tries to find Mr Hyunh's long-lost daughter.

Arnold and the gang set out on a quest to find the hidden treasure of the mysterious "Wheezin' Ed" on Elk Island.

Helga decides to give her talented sister Olga a taste of reality by changing her grade in her report card.

Eugene is accused of pulling the fire alarm. In the school court, the jury thinks Eugene is guilty except for Arnold, who believes there is a shadow of a doubt.

Arnold hits Harold with a baseball, so Harold promises Arnold that he'll beat him the next day.

On Valentine's Day, Arnold manages to arrange two dates; one with Ruth, the sixth grader he likes, and one with his French penpal Cecile (actually, it's Helga in disguise) – only for the real Cecile to suddenly appear and Arnold to discover what Ruth is really like.

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.

An organ grinder's monkey kisses Helga, who's convinced she has caught 'monkeynucleosis'.

The new girl is teased at school by Helga and the other girls, but she's soon accepted by everyone.

After Arnold saves Sid from an injury, Sid devotes himself to paying Arnold back with unending kindness.

Gerald, getting tired of his family bugging him, moves out of his home and into Arnold's boarding house, only to realize emancipation is not all it is cracked up to be.

Arnold's Grandpa enters a Chinese Checkers tournament to reclaim his pride lost forty years ago. Robby Fisher's name is a parody of Bobby Fischer.

Helga's mother tries to let her and her father, Bob, bond.

Helga uses Stinky as her boyfriend to try to make Arnold jealous.

After finding out that his idol is a haughty, primped actor, Eugene sets out to become bad.

A lounge singer moves into the Sunset Arms after renouncing his songwriter, who also moves there.

Mr. Hyunh has a talent for country singing, so Arnold and Gerald, after recording a CD with him at the local studio, become his managers and make him a big star, much to his dislike.

Patty challenges Helga to a fight after Helga gets on her last nerves by picking on her once too many.

Stinky's simple life changes after he becomes the surprise new spokesman for Ya-Hoo Soda.

Oskar gets a job as a newspaper carrier but uses Arnold as cover for his laziness.

Arnold finds out Iggy wears bunny pajamas with feet in them, and Arnold accidentially spills the beans to Sid and Stinky, ruining Iggy's cool image.

Harold is invited to Rhonda's party and befriends the female bully, Big Patty.

The Coach wants to remarry Tish and asks Arnold to be his best man. Along the way, Arnold teaches the coach a thing or two about love and sacrifice.

Helga, lost in a love reverie, writes 'Arnold loves Helga' on a wall, but changes the name to 'Lila' when the kids approach. Lila thinks that Arnold loves her until he explains the mistake. Then he falls for Lila and she is forced to break up with him.

Arnold and Helga both think they are having the worst Thanksgivings ever. Arnold's Family are celebrating President's Day, and Olga is at the Pataki house. When Arnold and Helga go to Mr. Simmons' house, they discover he has a obnoxious family, so they think their families aren't so bad after all.

Helga tells jokes about her classmates, who take offense to it.

Arnold is in charge of the school dance. He books has-been singer Dino Spumoni, and when he sings a depressing "good-bye" song, all fingers point at Arnold.

The school is doing the play "Romeo and Juliet". Arnold lands the role as Romeo so Helga will do anything to beat out other girls to get the part of Juliet, so that she can kiss Arnold in the final scene.

Harold, Sid, and Stinky all moon Principal Wartz, but Arnold is blamed, even though he was just an innocent bystander.

Helga's sister Olga comes home for spring break and becomes a classroom aid in Helga's class, much to Helga's chagrin.

Helga wants to show Arnold that she can be as sophisticated as Lila is by taking him, Gerald, and Phoebe out to dinner with a coupon she won. She devises a plan to get out of paying when she discovers they're at the wrong restaurant.

Helga tries to separate Arnold from Lila while at the annual Cheese Fair.

Harold, after discovering his friends think he is obese, decides to go on a weight-loss cruise. When he comes back, though, he is noticeably larger.

Arnold and Helga must care for an egg for a school project about parenting. Meanwhile, Rhonda and Harold are project partners and must also take care of an egg.

Gerald's Ghost Bride story inspires the other boys to venture into the cemetery at night, but they may have bit off more than they could chew, because they're hunted down by two different Ghost Brides.

Phoebe gets embarrassed after she "passes gas" in front of a microphone.