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'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.

Carly, Sam and Freddie do their Halloween webcast from an apartment that is rumored to be haunted. When creepy things start happening, the friends worry that the ghost rumors just might be true. Carly's strangely secretive neighbor, Mrs. Halberstadt, adds to their anxiety. Meanwhile, when Spencer forgets to buy candy, he's got a bunch of angry trick-or-treaters on his hands

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.

Lewbert, Carly's doorman, is injured during an exploding muffin basket prank. Spencer suggests that Carly, Sam, and Freddie help him until he's back on his feet, but it is more easily said than done. When Freddie's mother takes over, she makes it look easy, but leaves the group extremely concerned. Freddie's mother and Lewbert fall in love. Meanwhile, while using a CB radio, Spencer upsets two truckers nicknamed Porkchop and Sledgehammer.

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

When Carly, Sam, and Freddie find out that a TV show on the Dingo Channel has been copying material from iCarly, the kids and Spencer go to Los Angeles to confront the writers of the show.

After a prank on Lewbert Sam loses her phone in his office, when her and Freddie get it back Sam steals a personal box from Lewbert’s office. Sam, Freddie and Carly look through it, only to find some interesting stuff about Lewbert, biggest him having had a girlfriend. Getting an Idea they set out to reunite him with her so he can be happy and leave them alone, only to find out Lewbert doesn’t exactly “like” her. Meanwhile after a rash of robberies Ms. Benson signs Spencer up to a watch group with a little pest from his past.

Spencer comes to the rescue when a heat wave hits Seattle and the power goes out.

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.

Sam's friend gets out of juvy and Sam warns everyone to stay away, but Carly doesn't listen and finds herself in over her head. Back at the loft, Spencer finds a pair of night vision goggles.

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.