Carly (Miranda Cosgrove) (iCarly) is dating a boy named Steven Carson (Cameron Deane Stewart), who divides his time between his divorced parents in Seattle and Los Angeles. Every other month, Steven goes off to Los Angeles, where he is dating another girl named Tori Vega (Victoria Justice) (Victorious), who attends Hollywood Arts, a high school for the performing arts. Robbie Shapiro (Matt Bennett), a socially awkward friend of Tori's, posts a picture of Steven and Tori online, which Carly stumbles upon. She initially denies the fact that Steven is cheating on her, but Sam (Jennette McCurdy) seeks to prove it is indeed true. She finds Rex, Robbie's ventriloquist dummy, has tweeted about a party held at Kenan Thompson's house, in Hollywood.