Blair is caught off-guard – and not in a good way – by a surprise guest at her birthday party. Having had enough of Chuck and Blair’s games, Serena and Nate decide to plan an intervention.
Keywords: based-on-novel-or-book , based-on-young-adult-novel , bullying , cheerful , class-differences , growing-up , high-school , new-york-city , pretentious , private-school , provocative , romantic , satirical , soap , teen-drama , teenage-romance , upper-class , watch-TV-series-online-free