Hey Arnold!

After being saved from thugs by a mysterious, caped character named Monkeyman, Arnold tells the gang about it. Out on a field trip, Harold and Helga miss the bus and get separated from the rest of the class.

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.

The guys find a bag of money and they want to split it up right away. When Principal Wartz gets fed up with unappreciative children, he quits.

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.

Helga loses her infamous locket and it winds up in the wrong place in Arnold's house. Sid learns that germs are on just about everything people touch and becomes so psychotic about hygiene that he wears a protective suit.

Harold decides that he hates school and wants nothing else to do with it. But when he gets suspended and can find nothing to do at home, he tries everything he can to go back. Ernie falls in love with a beautiful magazine model.

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.

By complete coincidence, Arnold and Helga and family end up at the same beach resort for summer vacation. Helga is ecstatic until Arnold meets Summer, the girl of his dreams.

Arnold tries to help Eugene get out of a tree, but gets stuck himself. After a busy day at school of boasting and fashion policing, Rhonda comes home and finds out that they are now broke and have nothing left.

During a game of baseball, Arnold pops a fly ball and it hits Helga in the head. The knock on the head makes her goofy and causes amnesia. Grandpa is paid a visit by his old friend Jimmy, which sparks up his competitive nature.

Arnold pays his cousin Arnie a visit and it turns out to be much like being in The Twilight Zone. Wolfgang tells Chocolate Boy that if he can go two weeks without chocolate, he'll give him ten pounds of chocolate.

Harold becomes the King Of Arm Wrestling at PS 118. At a hockey game with Grandpa, Arnold prevents an airborne puck from hitting a stranger in the head.

Harold, Stinky and Sid steal rockets out of the science lab at school and set them off outside of an old police station. The deli shop where Mr. Hyunh works has a new owner and he's looking for a new head chef.

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.

Gerald becomes addicted to a game called "The King." When Arnold notices that Gerald is avoiding him and making excuses regarding his whereabouts, he becomes suspicious. Arnold, Sid, Gerald and Harold go on a fishing trip.

Rhonda uses her origami marriage predictor to tell who will marry who within the gang. Everyone becomes curious except Arnold.

When Gerald tries to get rid of his little sister Timberly, Arnold sticks up for her by persuading Gerald to let her hang out with them. Mr. Leichliter, the theater critic, posts auditions for his rendition of the classic play, "Eugene, Eugene".

Mr. Hyuhn, Ernie and Oskar combine their resources to purchase a racing horse. When Rhonda's dad buys her mother a fur coat for her birthday, the temptation is too great and Rhonda wears it to school.

Arnold finds his father's old journal.Through the journal, Arnold experiences his parents for the first time and finally feels a sense of closure. But as he examines the last two pages, he discovers a map of the location where his parents were headed.

As the gang passes through the cemetery, Gerald tells the story of the Ghost Bride who murdered her husband-to-be when he left her at the alter and married her sister. Gerald meets Chloe, a cute girl on his block, and instantly falls head over heels.

Mr. Simmons wins The Teacher of the Year award and The Knowledge Channel wants to do a documentary capturing the spontaneous moments in his class. Big Bob has a change of heart when he has what appears to be a heart attack.

Grandpa enters his packard in the classic car competition. It is admired by all until someone admires it enough to steal it. Phoebe is set to receive an award for her perfect attendance.