Season 01
Season 02
Season 03
Season 04
The Little Pink Book: Helga misplaces her diary, and it falls into the hands of Arnold. Arnold will stop at nothing to find out who owns the diary, and Helga will stop at nothing to get it back. Field Trip: On a field trip to the aquarium, Arnold can't wait to see Lockjaw, the infamous terror of the deep. But Lockjaw turns out to be an old tortoise with a graffiti-covered shell--and he needs Arnold's help.
All Episodes - S01
EPS01
Downtown as Fruits: Arnold and Gerald are cast as fruits in Helga's play, but when they get tired of Helga bossing them around, they decide to blow off the play and end u ...
EPS02
The Little Pink Book: Helga misplaces her diary, and it falls into the hands of Arnold. Arnold will stop at nothing to find out who owns the diary, and Helga will stop at ...
EPS04
Lipstick, hairspray, nail polish-Rhonda's birthday party is an all-girl affair, and that's why Helga isn't invited. But she's plotting revenge, and it's gonna make 'em ru ...
EPS07
Operation Ruthless: Helga finds out about Arnold's love for Ruth and his plan is to meet her at the Annual Cheese Fair, and Helga makes sure Ruth will never meet him, in ...
EPS10
Door 16: After a mysterious package is delivered at the boarding house, Arnold is entrusted to deliver the package to Mr. Smith, the most private boarder in the house. Un ...
EPS14
Arnold is given the assignment to tutor Torvald, the meanest, toughest kid in Arnold's math class, for the big math test on Friday. Gerald convinces Arnold to allow him t ...
EPS16
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 cer ...
EPS17
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 ...
EPS18
False Alarm: Eugene is suspected and accused of pulling the fire alarm, and it's up to a student jury to vote on the verdict, but Arnold's the only one who believes Eugen ...
EPS19
Magic Show: During Arnold's magic show, he makes Helga disappear by putting her in a box, but Helga sneaks out. After running into a post and knocking herself out, she ha ...