A broken tooth for Sam and a trip to the dentist requiring an excessive amount of nitrous oxide, leads to the revelation of a deep, dark secret that shakes the relationship of the entire iCarly cast and crew. Meanwhile Spencer offers to teach art to some prisoners in the hope of weaning them away from a life of crime... with disastrous results.
Carly and Sam use Spencer's spaghetti taco recipe in a competition with a TV Chef, and defeat him on his own show for the first time, sending him into what would seem like an inescapable depression. When they find out how severe his funk is, they try to help him out of it. But will their good deed lead to good rewards, or unleash the hidden wrath of a madman?
The iCarly awards for best fan-made videos is put at risk when Spencer messes up on the award design and has to ask a group of Russian swimsuit models who barely speak English to help him finish them - while the gang are doing the show.
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.
After a "Messin' With Lewbert" sketch, Sam finds out that Lewbert had a relatively normal life at one time that included no wart, a modeling career, and a girlfriend. This convinces the iCarly crew that reuniting Lewbert with his ex-girlfriend will make him happy, and stop him from hassling everyone at Bushwell Apartments. Boy, are they mistaken!
Freddie finally moves out of his apartment when his mother takes her doting nature way too far. Carly & Sam's grooming of Gibby's dog on an iCarly segment leads to a side job for the girls as pet groomers, and some fierce competition from a pair of pet-photographers.
After Carly & Sam agreed to help Fleck and Dave make a video, Carly and Sam must choose sides when the comedians begin to fight. Fleck keeps infuriating Dave's restrictive father much to Dave's dismay, and the girls are drawn into the conflict.
Carly gets a crush on Freddie because he saves her life and is injured himself in doing so. Freddie can finally have everything he ever wanted, but he is faced with a difficult question: Is this really the way he wanted Carly's affections?
A deep dark secret is revealed about Sam... she used to compete in CHILD BEAUTY PAGEANTS! Plus, now that an old nemesis from her beauty pageant days has arrived for another tournament, she drafts Carly to compete against her. Meanwhile, Spencer convinced Freddie to go on a double date with some girls, which doesn't exactly go the way he plans.
Washed-up former teen pop sensation Ginger Fox finds out that Freddie is responsible for directing and producing the music video for Wade Collins song "Cry Like a Lion"(see "iRocked the Vote," episode #2.9), and drafts the iCarly crew to help get her career back on track. Considering that she still hasn't regained her marbles, they've got their work cut out for them.
Sam winds up in jail, forcing Spencer to co-host iCarly. He also has a date at the exact same time and has to alternate between the two, while trying to keep the co-hosting part a secret from his from his more sophisticated date.
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.
When an heat wave hits Seattle and knocks out the power, Spencer buys an exotic air-conditioner/generator that brings all kinds of unexpected visitors: Spencer's sworn enemy Chuck, along with his father and surprisingly attractive sister; Freddie's mother with a group of senior citizens; Freddie's cute, but freakishly tall date Sabrina (who is also Gibby's cousin); Carly's ex-boyfriend Griffin; and a lot of other neighbors. Carly and Spencer's apartment is perhaps the coolest in the building, but the gang soon find it to be unbearable to be in.