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.

Carly and Sam get inspiration to dance from dance videos sent by fans of their web show. Carly struts her stuff in a dream with her charming partner.

Carly's grandfather comes for a visit and is appalled by Spencer's unusual behavior, so he questions Spencer's ability to be in charge. Carly must convince him that Spencer is capable of being her guardian.

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.

Spencer becomes depressed and uninterested in art after his idol criticizes his work. Carly tries to cheer him up by featuring some of his sculptures on the show.

Daka Shoes wants iCarly to promote their new shoe, Techfoots. Carly accepts and tells all her viewers to buy the shoe. Unfortunately, the shoes are no good and fans began to complain. The gang has to find a way out of the contract. Meanwhile, Spencer expresses his dislike for public transportation after he falls asleep on a bus and ends up in Canada.

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.

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.

Spencer gets a new credit card after canceling his old one, causing Carly, Sam, and Freddie to lose control of the iCarly.com domain. Luckily, Mandy (who appeared in "iAm Your Biggest Fan") returns to buy their website back for them, but she gets tricked into giving it to Nevel. Spencer disguises as an old woman to trick Nevel into signing the URL transfer document during a book signing, but is chased out by security after Nevel recognized him. Later, Nevel demands a kiss from Carly in return to claim the transfer document. Carly confronts Nevel, and Nevel signs the document. However Carly escapes with the signed document without having to kiss Nevel and succeeds in reclaiming their website.

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

On iCarly, Sam's tooth falls out, leading Carly to take Sam to the dentist. When the doctor gives Sam laughing gas, Sam accidentally reveals that she and Freddie shared a secret kiss with each other. Carly gets angry because friends aren't supposed to keep secrets, but in the end she is OK with it. Meanwhile, Spencer teaches an art class in a prison, he and the prisoners build a big pair of pants that two prisoners hide in and jump out in Carly's house and tape Carly Sam and Freddie to three chairs after Freddie threatens to call the Police.

Sam admits she was a pageant girl after she stormed off the iCarly set. Desperate to defeat her rival she gets Carly to enter the pageant for her, only to take her place later. Meanwhile, Spencer and Freddie double date, however, the date goes bad when the two get caught up in a board game.

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

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

Carly and her pals work on completing assignments during a "lock-in" at their school. Carly and Freddie think that Sam has a new crush and assume the lucky guy is their intern, Brad. Freddie then uses his Mood Reader app, which confirms that Sam is in love but doesn't specify with whom.

Gibby wants to sabotage Sam and Freddie's romance, and Carly is torn about whether to help him.

It's Carly's dad's birthday, and things don't go as planned. He was supposed to come home for his birthday and celebrate it with Carly and Spencer, but can't make it because of some emergency. Sam and Freddie feel bad about what happened so they connect her up with him through a video chat.

Carly, Sam, and Freddie wonder why people can't celebrate Halloween more than once a year. They decide to celebrate it halfway through the year as well creating a new holiday termed "Halfoween" and have a party.

After Spencer's arch-nemesis Chuck pulls his latest prank on him and steals his clothes, Spencer finally gets rid of his nemesis by getting Chuck sent to military school. However, this causes Chuck's younger brother Chip to hate Spencer and terrorize him more than Chuck did. Meanwhile, Gibby buys a Galaxy Wars toy phaser and becomes depressed when Sam accidentally breaks it while beating up a bully.