Old Iron Man: Grandpa Phil and his old friend have been feuding for quite some time, as their friendship fell apart years ago. However, they still attempt to compete with one another as they each believe they are the better individual; though when both men decide to enter the extremely dangerous Old Iron Man triathlon, Arnold attempts to put an end to their feud, as he doesn’t believe they should risk their lives over something so trivial.moreless
Rhonda Goes Broke: Rhonda's family goes broke and they move into the boarding house.
When Arnold, the boarders, and the Patakis go to the beach, a girl uses Arnold to win a sandcastle competition. Ernie gets buried in the sand. Miriam and Suzie start taking dancing lessons. Grandpa Phil thinks he's stuck on an island. Oskar starts using a metal detector to find "treasure." Big Bob gets a bad sunburn. Helga tries to warn Arnold that he's just being used.moreless
Arnold asks Grandpa Phil what really happened with his parents, and he finds out that they disappeared after they left the country on a plane, although they might still be alive.
Sid and Germs: Sid becomes obsessed with cleanliness.moreless
Phoebe Breaks a Leg: When Phoebe breaks a leg after being hit by a truck, Helga believes it's her fault (and it is), so she starts being nice to Phoebe. Yet when Phoebe's leg heals, she decides to stay disabled for a little longer.moreless
Principal Simmons: When Mr. Simmons is upset that Principal Wartz is being too strict with the students, Wartz decides to resign and he selects Mr. Simmons to take his place. The newly promoted Principal Simmons decides to make massive reforms to permit the school environment to be more liberal, though will the students at P.S. 118 appreciate his authority?moreless
Big Sis: Olga gets into a "Big Sis" program, but her "Lil' Sis" is Lila.
Mr. Green Runs: Mr. Green runs for city council.
Headless Cabbie: Arnold tells an urban legend about a Headless Cabbie, but when Arnold and the gang go through the park (for ice cream) where the legend supposedly happened, they have weird occurrences involving the legend and their travels.moreless
Fighting Families: Arnold, Grandpa Phil, Grandma, Ernie, and Mr. Hyunh compete on a game show against a family that seems perfect in every way.moreless
Synchronized Swimming: Coach Wittenberg talks Arnold, Eugene, Harold, and others to join a synchronized swimming team, and swim to the classic movie, "Come Back Wayne."moreless
Baby Oskar: Suzie's cousin leaves her baby (Oskar) with Suzie and Oskar, but when Suzie has to go into work unexpectedly, Oskar has to take care of the baby.moreless
Polishing Rhonda: After Rhonda and Patty get in a fight, both of their parents send them to polishing school, but it appears that Patty will graduate before Rhonda.moreless
Deconstructing Arnold: Everybody is sick of Arnold giving them advice of their lives, so they stop listening to him, but they get problems without his good advice.moreless
Arnold and Helga get paired up to raise an egg for school, but they end up losing it when they left it on the bus.moreless
When it looks like Otto will make the cover of Gnarly Surf Magazine, Reggie is angry because the photographer doesn't think girls can surf. She decides to set up a girls only surf party to prove him wrong.
Twister shows his latest video to a crowd at the Shore Shack - the only problem is that it includes a clip of Otto crashing. Otto gets embarrassed when everyone sees him beefing, and he gets so upset with Twister that he makes Sam his new best friend.
Niles is lonely when he realizes he has no romantic prospects while everyone else is happy. He dates a younger woman but finds it difficult to keep up with her. Meanwhile, Roz takes up with Bulldog.moreless