2x9 - iCarly

When Spencer makes an electromagnetic Christmas tree, the tree bursts into flames, which makes Carly furious at him because the fire mauled the presents Carly got for Spencer. Carly then wishes that Spencer was born normal. Carly's guardian angel, Mitch, makes this wish come true, surprising Carly. The next day, at school, Sam is absent, Freddie was never friends with Carly, and to make things worse -- Nevel Papperman is Carly's boyfriend. Carly questions Mitch about Sam's disappearance, and Carly is taken to the Juvenile Detention Center, where Sam is being held. Carly finds out that Sam was never her friend, either. Carly returns home and then is told that Mrs. Benson and Spencer are now engaged, making Carly angry at what the world has become. Carly then walks up the stairs and finds out that, because Sam and Freddie were never her friends, iCarly never existed, either. Carly begins to sob, realizing how much the world would change if Spencer was born normal. Mitch turns the world back, making Spencer born abnormal. Carly is now happy with the electromagnetic Christmas tree, and Carly, Sam, Freddie and Spencer have a good Christmas together in the end.