Sam has a twin sister named Melanie (Portrayed by Jennette McCurdy). Freddie is not convinced, and to try to prove it, he sees Melanie in person and invites her to a dance with him as his date. The plan to try to prove that Melanie is really Sam takes an unexpected turn when Melanie kisses Freddie, who then becomes extremely paranoid. Meanwhile, In the end, since Freddie refuses to believe it, Sam admits to Freddie that there is no Melanie. Satisfied, Freddie departs right before Melanie (who reveals that she still has romantic feelings for him) arrives to go to the mall with Sam and Carly. Meanwhile, Carly tries to tutor Chuck in math, and Spencer shows Carly how evil Chuck really is (with the help of a hidden video camera that Socko set up). Carly gets revenge on Chuck by telling him there's a new number called "dirf" between 5 and 6, and because of this, Chuck fails his math test and Spencer gives his dad a brochure about a summer math camp called Camp Add-m-Up, sending Chuck to math camp for the whole summer.
Carly hosts her own home-grown web show, iCarly. She lives with her twenty-something brother/guardian Spencer and produces her Web casts from a makeshift third-floor loft studio. Grappling with adolescence, she never aimed to gain fame as a rising star/underground celebrity to kids. As events unfold in the pilot, it all happens by accident when a teacher puts her in charge of the school talent show. She and her sassy best bud Sam turn the audition process into a show, which Carly's tech savvy smitten friend Freddy tapes - including their hilarious banter and great chemistry - and posts on the Web without telling the girls. The on-line audience clamors for more, and a pop phenomenon blooms, with Carly and sidekick Sam's regular Web casts ultimately featuring everything from comedy sketches and talent contests to interviews, recipes, and problem-solving.