The first episode is "Spelling Bee", It's time to crown the spelling champ of the whole city, and P.S. 118 has two contenders for the $500 prize. In one corner, Arnold. In the other, Helga. The second "Pigeon Man", Arnold's prized pigeon takes ill, and only one person can help-the creepy recluse Pigeon Man. But when Arnold visits him in his rooftop roost he find they're birds of a feather.
When Helga's older sister, Olga, comes home from college and gets all of her parents' attention, Helga plots to sabotage her sister's visit.Arnold and Gerald save up cereal box tops to get a telescope before the arrival of Salley's Comet.
Arnold's pet pig, Abner, escapes one night while Arnold is sleeping. When Arnold tries to bring Grandpa's pocket watch home from the repair shop, he accidentally drops it down a hole in the street, which leads him to strange subterranean world.
Arnold gives an amateur magic show behind the boarding house and, for his big number, makes Helga actually disappear.When Arnold accidentally beans Harold in a baseball game, the bully vows to "kill" him, and gives him 24 hours to live.
Arnold and Helga are editors of competing school newspapers.Harold softens when he finds a lost cat and then refuses to give it up to its rightful owner. Arnold eventually persuades Harold to give up the kitty.
AKA - Trash Can Day, Arnold and Gerald must get through the traditional day of hazing 4th graders.After EugeneÃ+s pet fish is accidentally killed by ArnoldÃ+s yo-yo, Arnold vows to get unlucky Eugene a pet that will endure.
Arnold and Gerald catch a suspicious man on film and they follow him clue-to-clue.In an effort to win a class poetry contest, Phoebe copies a poem from a book. Thereafter she is haunted by her guilty conscience and the imagined voice of her trophy.
Arnold and the rest of his fourth grade friends play the seemingly unbeatable fifth graders in touch football.Gerald, the middle child in his family, is feeling so neglected that he moves into Arnold's boarding house.
Arnold and Gerald team up to carry out the ultimate Halloween prank, by deliberately faking a news radio broadcast of an alien invasion, causing widespread panic throughout town not seen since Orson Welles inadvertently did so in 1938!
Arnold trains Grandpa to take on his old Chinese checkers nemesis, Robby Fisher.Miriam decides to visit her mother after learning that Big Bob and Helga are on vacation at the same time. Now father and daughter must spend some quantity time together.
Like his Grandfather before him, Arnold competes in the annual block party eating contest.Fashion and image-aware Rhonda fails the eye chart and gets glasses. Immediately she is labeled a geek and is forced to hang out with the geeky kids.
Arnold and Gerald recruit their old basketball coach to be their bowling coach, and he quickly alienates them with his overbearing demandsArnold and Gerald go on a ghost hunt through the boarding house, trying to uncover the mystery of Four-Eyed Jack.