Grandpa's car is stolen when he enters it in a classic car competition; Phoebe has an embarrassing moment while accepting an award.

The Knowledge Channel wants to make a documentary of a typical day in Mr. Simmons' class; Big Bob decides to completely change his life

The gang gets a scare visiting a cemetery at night; Gerald's crush likes his older brother.

Timberly has a crush on Arnold; Eugene gets the lead role in the school musical.

Mr. Hyunh, Oskar, and Ernie purchase a race horse; Curly gets Rhonda to act like his girlfriend.

Harold, Stinky, and Sid think that they blew up the police station; Arnold pretends to be Mr. Hyunh's son.

Arnold dislikes Gerald's new favorite game; the boys go fishing.

Harold lose an arm-wrestling match to Patty; Arnold catches an airborne hockey puck.

Arnold visits his cousin Arnie; Wolfgang makes a deal with Chocolate Boy.

Arnold hits Helga with a baseball; Grandpa gets a visit from an old friend.

Arnold gets stuck in a tree helping Eugene; boastful Rhonda learns her family is suddenly poor.

Arnold and the Patakis end up at the same beach for summer vacation.

Harold hates school; Ernie falls in love with a magazine model.

Helga loses her locket; Sid worries about germs

Arnold asks Grandpa about his missing parents

A bully threatens Wolfgang; Phoebe rescues Helga from a speeding bus

The guys find a bag of money; the principal quits

A movie spooks Sid; Olga is jealous of Lila

Helga tries to be like Lila; Mr. Green runs for city council.

A superhero saves Arnold; Harold and Helga miss the bus while on a class trip.