Lewbert’s redemption was so masterfully done, Gibby’s character arc of learning to accept himself was so sad because he had to sacrifice his shirt to save Carly.

The plot of the game is where Nevel builds a portal to another dimension and gets Spencer sucked into it, Carly, Sam, Freddie and Gibby go in to save him.

Nevel recruits some of ICarly’s worst villains, Nora, Chuck and Lewbert.

In the other dimension it is revealed that Spencer has been kidnapped by Chuck and he is planning to execute Spencer.

Lewbert has been setting traps for the main characters and plans on blowing them up.

Nora just wants revenge.

Nevel is hiding in the tallest Tower in the Kingdom and wants to rule everything.

After hearing Freddie is in an alternate dimension, Mrs. Benson goes in the portal to find him.
There are 13 worlds in the game and each world you play as a different character.

World 1- You play as Carly, who can double jump, the boss of this world is Nora who has a baseball bat she hits you with.

World 2- You play as Sam who has increased strength, the boss of this world is Lewbert whose screech stuns you for 3 seconds.

World 3- You play as Freddie who can glide, the boss of this world is Fred, who is pretty weak and goes down easy.

World 4- You play as Gibby who can suffocate enemies with his shirt, Nora is also the boss of this world, but she is twice as strong.

World 5- You play as Mrs. Benson who has the best move in the game, Supersonic scream, where she screams “FREDDIE” at the top of her lungs and kills every enemy on screen, but it can only be used once a stage, the boss of this world is Lewbert who is twice as strong as his first fight

World 6- You play as Spencer and the world starts with him escaping from his cell and a Chuck boss fight starts. There is no end boss for this world.

World 7- Carly, Boss is Missy who has a kick.

World 8- Sam, Boss is the PETographers, they attack you b throwing their cat at you but they go down in 2 hits each.

World 9- Freddie, Boss is Mrs. Briggs who uses Bagpipes to stun you for 2 seconds but she goes down in 5 hits.

World 10- At this point Lewbert finds out Nevel betrayed him so he joins Gibby, The boss of this world is Nevel, this is a boss to prepare you for the final showdown.

World 11- Mrs. Benson, the Boss is Big foot, who kidnapped Freddie, the boss is a remake of the first Donkey Kong stage.

World 12- Spencer, this point in the game all thw characters have reached Nevels Tower but Chuck stands in the way, beat him and you can face Nevel.

World 13- You play as all the characters and the final Boss is Nevel, who is challenging, you must use everything you have learned to defeat him.

Ending: Nevel falls to his death and the ICarly crew, and Lewbert go back home and everything is back to normal.