Helga, bajo los efectos del gas del dentista, confiesa su amor por Arnold, lo que lleva a situaciones embarazosas y cómicas.

Harold roba un jamón y debe trabajar para el carnicero para compensarlo, aprendiendo sobre responsabilidad y honestidad.

Arnold se siente culpable por avergonzar a Iggy accidentalmente y trata de enmendar su error, enfrentando las consecuencias de sus acciones.

Arnold y Gerald descubren el talento musical del Señor Hyunh y lo ayudan a perseguir su sueño de convertirse en cantante de country.

El Abuelo decide vender la casa de huéspedes, pero Arnold y los huéspedes intentan detenerlo, mostrando el valor de la comunidad y el hogar.

Gerald se somete a una operación de amígdalas y su voz cambia, afectando su confianza y su papel en el coro de la escuela.

Sid tiene que trabajar con Lorenzo en un proyecto para la escuela, pero luego de ver la habitación de Lorenzo, Sid se avergüenza de la suya propia, por lo que toma «prestada» la habitación de Arnold para hacerle creer a Lorenzo que es la de él.

Helga insulta a Patty, pero ella la escucha, así que deberá enfrentarse a ella para el final del día.

Stinky es elegido como el chico «Yahoo» para un comercial y de pronto está en la cima del mundo, hasta que se entera que lo escogieron porque es demasiado tonto.

Olga anuncia que va a casarse, pero Helga descubre que su novio miente para ganarse a Miriam y a Big Bob.

Curly ha estado contando los días para ser monitor de balones, pero cuando el Señor Simmons escoge a Sid, Curly se encierra en la oficina del director con todos los balones de la escuela.

Phoebe gana un concurso para conocer a su cantante favorito, pero se siente abrumada por la fama y la atención que recibe.

Arnold organiza una fiesta sorpresa para el cumpleaños del Abuelo, celebrando su vida y las historias que ha compartido.

Arnold y su abuela emprenden un viaje por carretera lleno de aventuras, fortaleciendo su vínculo y descubriendo nuevas experiencias.

Principal Wartz gives Sid a detention believeing he placed fake vomit so he could trip over, even though it wasn't Sid who put it there. As a result, Sid seeks revenge and reates ""Revenge Doll"" of Wartz's face, like they do in tribes. He thinks he killed Wartz with the curse. Arnold thinks he's paranoid, even though there are a few clues hinting out that Wartz is dead.

A roller coaster breaks down while Eugene and Arnold are at the top of its tallest drop.

After the results of an aptitude test are announced, Harold gains self-confidence and Helga feels dumber.

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.

Bob hires a nanny to help Miriam around the house, much to Helga's dismay. From this moment on, Helga attempts to scare the nanny away.

A. All the kids are paired with adults with interesting jobs except Arnold, who is forced to spend time with the Jolly Olly, the Ice Cream Man.

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.

The kids compete in a grand prix race against each other.

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.

The town is flooded and Arnold's class is trapped in the school.

P.S. 118 is holding a Spelling Bee, and Helga wants to win one trophy to get out of Olga's shadow, but Pheobe has to back out of the competition for Helga to make it.

Arnold, Grandpa, and friends reenact the Pig War.

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.

As a science assignment, Arnold and Helga have to work together, and get along with each other, for 24 hours in the Sunset Arms greenhouse.

Arnold has to do a book report, and he decides to do it on his favorite author, Agitha Cawfield, but he sees her bad side when she is very crabby & rude to him.

Lorenzo, a neurotic rich kid, comes to P.S. 118. All the kids try to help him become an average kid.

Arnold snaps at school after Helga tries his patience once too often.

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.