Monkeyman. :When Arnold gives the superhero Monkeyman a taste of normal life, he's far too busy to bother helping the weak and downtrodden. Buses, Bikes, and Subways: Helga and Harold must return to town on their own after the bus leaves them behind after a school trip to a chocolate factory, and Helga has tickets for a wrestling match and she can't be late.

When Helga realizes that Arnold is so taken by Lila because of her wit and charm, she decides that the only way to get Arnold to notice her is to be like Lila./Arnold helps Mr. Green run for the City Council.

After A Chilling Vampire Movie, Sid Is So Spooked That He Believes That Stinky Has All Of The Characteristics Of A Vampire. Olga Comes Home And Wants To Be A Big Sister To A Little Girl.

Bag of Money: Arnold tries to convince people that an old lady with a peg leg, pink hair, and one eyebrow took a bag of money by mistake, exactly $3,937 that he, Sid, and Gerald found in an alley. Principal Simmons: When Principal Wartz leaves after being criticized for being too harsh with the students, Mr. Simmons is elected as principal in his place, only to discover it's not as easy as he thought.

When A New Bully Comes On The Block, Wolfgang Feels Threatened That He Will Lose His Power Over Arnold And The Gang. Phoebe Breaks Her Leg When She Rescues Helga From The Pathway Of A Speeding Bus.

At the Parent's Day competition, Arnold learns that even though he doesn't have real parents, his grandparents are just as good as everyone else's parents.

Helga's Locket: Helga loses her locket inscribed with her name, and Arnold's Grandpa finds it. Helga has to get it back before Arnold and his Grandpa open it. Sid and Locket: Sid was the champion frog-catcher of P.S. 118 and was going to be in the Annual Frog-Catching Contest until he becomes obsessively clean after watching a hygiene film.

Harold Decides That He Hates School And Wants Nothing Else To Do With It. Ernie Falls In Love With A Beautiful, Voluptuous Magazine Model.

By complete coincidence, Arnold and Helga and family end up at the same beach resort for summer vacation.

Stuck in a Tree: Arnold, Harold, and Eugene get stuck in a tree and their only hopes of getting down are from Chocolate Boy. Rhonda goes Broke: When Buckley's stocks dry up, Rhonda's family goes broke and is forced to live at the Sunset Arms.

Beaned: After Arnold accidentally hits Helga on the head with a baseball, she develops amnesia and he takes care of her. Wanting to continue getting Arnold's attention, Helga pretends to have amnesia after she recovers. Old Iron Man: Grandpa and Jimmy Kafka, his rival since their school days, compete in the Old Iron Man triathlon to prove who's the best.

Arnold Visits Arnie: Arnold visits his cousin, Arnie, whose friends look remarkably familiar to Arnold's. Chocolate Boy: After Wolfgang makes a bet with Chocolate Boy to go 2 weeks without chocolate, he asks for Arnold's help to find an end to his addiction.

Harold vs. Patty: After losing an arm wrestling match against a girl, Harold becomes a laughingstock at school and tries his best to regain his stride. Rich Guy: When Arnold stops a hockey puck from hitting a rich man, the man treats Arnold as the son he's always wanted. Arnold is fine with this until he discovers the man actually does have a son of his own, and tries to help the two have a better relationship.

It's April Fools and Helga has targeted Arnold as her practical joke victim for the day. When Helga goes one prank too far, Arnold stages a retaliation and brings in Grandpa's prized practical joke.