Carly, Sam and Freddie try to cheer up a lonely fan named Nora on her birthday, but instead of just going to a birthday party, they realize that Nora wants to lock them forever in her house. When they learned about Nora’s plan they formulate a coded SOS message and send it to Gibby, along with his little brother Guppy, who’s doing home repairs for Spencer in exchange for setting up a camp in the loft. But soon the trio learns that escaping from crazy girl’s house is harder than they thought.