When Arnold's pigeon gets sick, he takes it to "Pigeon Man", a person surrounded by pigeons who lives in a rooftop.

Arnold and Gerald must turn off all the lights in the city if they want to see Sally's Comet.

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.

Arnold and Gerald compete against Helga for the school newspaper.

Arnold and Gerald go around the city following "Porkpie", a mysterious man caught on film. They suspect, because of the clues, that Porkpie are planning to kill "Marty", who turns out to be Mr. Green.

Arnold and Gerald send the neighborhood alien crazy as they broadcast a mock Halloween radio show.

Arnold follows in his Grandpa's footsteps and competes in the annual block party eating contest. After much munching Old Football Head goes stomach to stomach with eating legend Seymour 'The Disposal'.

Arnold develops a crush on Miss Felter, a substitute teacher, thinking he is having dinner at her house, only to realize that the one she invited was her fiance, whose name is also Arnold.

Harold runs away from his Bar Mitzvah, thinking he will retain his childhood this way.

Teachers of Arnold's school go on strike because of inadequate funding; He and his friends are on cloud nine, only to find out that every lost school day will be taken from their summer vacation.

As punishment for shoplifting a ham, Harold is forced to work for Mr. Green at his butcher shop for a week. Later, after his work shift to pay for it is over, he soon learns that he actually likes his new after-school job and doesn't want to stop working there, much to the dismay of Mr. Green.

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.

Grandpa becomes tired of dealing with the boarding house and decides to sell. Arnold has to convince him how important it is for everyone to remain in the boarding house and what they would lose if it was sold.

Sid pretends that Arnold's room is his, since he's ashamed of showing his real room to Lorenzo.

Curly gets enraged after a minor playground mix up. He locks himself in the principal's office and refuses to come out.

Phoebe wins a chance to meet her favorite singer, only to find out that he doesn't write or sing his own songs.

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

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.

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 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.

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

After Sid works off a debt with loan shark Big Gino, the two become friends, but when Sid is told to give Arnold a swirlie, he has to choose between the two.

Stinky grows a huge pumpkin to enter in a city competition.

Arnold finds out that Oskar is illiterate and tries to teach him to read.

After getting in a car accident, Bob and Grandpa face off on the golf green, with the loser having to pay for the damage to both cars.

After Mr. Simmons wins an award, a TV station does a documentary on how he teaches.

After Big Bob has a heart attack, he tries to become nicer.

Grandpa's Packard is stolen from an antique car show.