Carly is a young teenager living in Seattle. When her friend Freddie accidentally leaks a video of her and her best friend Sam onto the Internet, they decide to create an online web show.

Carly and Sam compete with Freddie and Spencer to see which team can increase the number of hits on Carly's website, using the most elaborate techniques available to each team. The losers have to touch the wart of the Bushwell Apartment doorman, Lewbert - a man that Carly & Sam are convinced is the meanest man alive. Judging from their hidden camera in the lobby of Carly's apartment building, it's easy to understand why they hate him.

After enduring Ms. Briggs' lesson on traditional Scottish folk dancing, Carly and Sam call for their viewers to send videos of their own dance routines. Soon enough, the site is filled with so many video files for them to review that it starts to go to their heads.

For a potential web-cast, Carly and Freddie try to find out if Mrs. Briggs' hostility extends beyond the classroom, and end up getting trapped in her house.

Carly and martial-arts champ Shelby Marx (Zoey 101's and Spectacular!'s Victoria Justice) agree to have an exhibition fight for charity after Carly jokingly challenges her to a match. Unfortunately, Carly accidentally falls on Shelby's grandmother during a press conference. Thinking Shelby wants revenge, Carly backs out of the fight, only to be ridiculed as a coward. Carly visits Shelby and apologizes, and the fight is back on. However, Nevel Papperman alters a clip of the press conference to make it look like Carly intentionally tackled Shelby's grandma to dupe Shelby into fighting Carly. Shelby, furious, attacks Carly for real during the match, Carly then holds Shelby's leg for the rest of the "fight".

Principal Franklin is fired after appearing as a guest on iCarly and is replaced by Mr. Howard, the math teacher, and Miss Briggs, the English teacher as co-principals. Spencer hires a rodeo star to teach him how to ride a mechanical bull.

The cast introduces various bloopers and outtakes from the entire series.

Bigfoot fever hits Seattle when hikers take some fuzzy footage of a suspicious figure in the woods. After an expert validates the footage on the web show, Carly convinces the gang to take Socko's RV upstate and join the search for Bigfoot.

Carly and Spencer are being evicted from their apartment, and the gang reminisces about their time in Bushwell Plaza. Although, their memories may not be quite how we remember them.

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.