Carly is sad when her father cannot escort her to a military dance. Sam and Spencer fix a motorcycle. Gibby gets his head stuck in an "artificial head machine" (because he sold his first one at the pawn shop). Freddie gets a new phone.

After discovering Kyoko and Yûki's sabotage attempt, Marissa locates the lost iCarly gang. The group reunites and gets to the iWeb Awards, but are apprehended when the guards do not understand English.

Freddie, Sam and her webcast, iCarly. Freddie and Sam scheme to make sure that Carly stays. Meanwhile, Spencer builds a mini golf course that becomes popular.

Carly and Sam agree to help up and coming comedians Fleck and Dave make a contest-winning video, but when the two comedians fight and choose to end their friendship, Carly and Sam feel responsible. They try to patch things up between the two, only to find the problems ring familiar. Carly and Sam take sides and begin to fight.

After Carly recruits Spencer to help her prank Sam and Freddie, Spencer can not stop pulling pranks.

Carly is dating a boy named Steven who divides his time between his divorced parents who live in Seattle and Los Angeles. Meanwhile, Tori is also spending time with her new boyfriend who, unbeknownst to her, is the very same boy Carly is seeing. The iCarly gang stumbles upon a photo of Steven and Tori on The Slap. André gets permission to host a party at Kenan Thompson's house with his friends.

When Freddie offends an international internet sensation, Fred, he gets crushed and says to all of his fans that he will not make any more Fred videos. Carly, Sam, and Freddie soon start losing friends and acquaintances that are fans of Fred, and everybody in Ridgeway Jr High hates the iCarly group and Freddie is banned from all clubs. Then meet Lucas, Fred's creator and portrayer, in his home in Idaho for Freddie to forgive him about the Fred videos comment. Lucas later apologizes because he wasn't really mad, it was so Fred and iCarly had more ratings. At the end they apologize live in the iCarly webshow and presented a new Fred video with Carly, Sam, Feddie and Spencer guest starring as themselves with high-pitched voices like Fred. Meanwhile Spencer puts a Magic Eight Ball-like toy (called a "Magic Meatball") in control of his life, with disastrous results.

With Spencer's blessing, Carly and Griffin's relationship advances happily and without flaw, until Griffin reveals that he obsessively and neurotically collects a series of stuffed animals called "Pee Wee Babies".

Spencer finds a Pak-Rat video game cabinet in a junkyard and becomes addicted to it, whilst procrastinating on a commissioned Labradoodle sculpture. To curb his addiction, Carly brings Sasha Striker, the top Pak-Rat player in the world, to compete against Spencer to defend her title as the world champion of Pak-Rat. Meanwhile, Freddie experiences a streak of "bad luck" after deleting and not forwarding a chain email, passing it off as a superstition.

The iCarly Crew performs sketches on their show that spoof those on "Late Night with Jimmy Fallon," which the host finds so impressive, that he invites them on his show for a rare live performance. Thanks to some of Gibby's usual misfortune however, the cast of both shows almost gets in trouble.

Carly gets a B on her history paper and becomes upset because she thinks she deserves better. Sam hacks into the school computer to change the grade and all is fine until Carly has to deal with her guilty conscience.

When Carly, Sam, and Freddie defeat a famous TV chef in a cooking challenge, the chef gives up cooking, quits his show, and refuses to come out of his bedroom. Spencer tries to make his vision of the future a reality.

The iCarly gang travel to Tokyo after the show is nominated for a prestigious iWeb award.

Valerie, a girl from school, shows interest in Freddie, and they become boyfriend and girlfriend. She tries to tear Freddie away from iCarly to film her webcast and tries to recruit Sam, too.

Sam owes Carly and Freddie $526, so she gets a job to earn the money, and pay them back. Carly, Sam, and Freddie make a broadcast on iCarly to all their fans to donate money to Sam. However, they find out its illegal to solicit money over the internet. Meanwhile Spencer tries to impress an attractive single mom by helping her daughter sell fudge balls, an equivalent to Girl Scout cookies, but two scouts stole Spencer's place at the market. Spencer comes up with the idea to send every iCarly fan who sent them money to send them fudge balls. Carly and Freddie then hire someone to give the money they earned to Sam in a tip. At the end, everyone enjoys what Sam got with her money except Spencer.

The group lands in a deserted area of Tokyo, where they are found by a Japanese policeman who brings them safely to their hotel. They are visited by Kyoko and Yûki, the stars of a competing webshow. The pair give Spencer and Marissa free passes to a Nakamura Spa where their cousins work and take Carly, Sam and Freddie shopping.

Carly has to do a project for green week, so she makes an electric scooter. But, it can only go for 4mph and it caught on fire, so she is given the weekend to make a new project. Spencer brings in a good-looking Science geek named Cal who helps her make a generator for iCarly, and Carly gets an A+. It is then revealed the generator was illegal and Cal was a criminal for buying Uranium, so she has to go on the Root-and-Berry Retreat to get extra credit.

When Carly's old friend Missy Robinson returns to Seattle, Sam believes Missy is trying to replace her as Carly's best friend.

Carly and Sam hire an attractive male intern who winds up being bad at his job, so Freddie tries to convince them to fire the new guy

Nevel's image is ruined after a video of him berating a child goes viral, so he asks Carly and the gang for help in restoring his reputation.

The Plain White T's are set to perform on iCarly, but Nevel plans to ruin the event by hacking into the site.

Carly and Spencer become upset when their new neighbor Griffin steals Spencer's motorcycle. Spencer lets Griffin off the hook, making Carly upset. However, when Spencer later goes out to get smoothies, he returns to find Carly and Griffin kissing on the couch. Spencer becomes furious and forbids Carly to see him. Meanwhile, Sam pays Freddie $50 to make a website.

Sam moves in with Carly after fighting with her mother; Freddie is stalked by a dangerous criminal.

It's Carly and Sam versus Freddie and Spencer in the ultimate competition to see who can attract more viewers to the show. Things go crazy when they carry out their plans.

In the second-season opener, Carly and Sam both develop a crush on Freddie's "nerd" pal, Shane. When they cannot decide who should date him, they decide to go by the first one to kiss him. They constantly try to kiss him, and always become unseccessful. Meanwhile, Spencer hires a repairman to fix the elevator, but the repairman proves to be no help at all, just a dancer. Because of the broken elevator, Shane accidentally falls from the iCarly studio to the basement when he finds out that Sam and Carly are competing for him. When the gang visits him at the hospital Carly kisses him.