Gossip Girl (2007)

S1E1 Pilot

Title: Pilot Plot: The beloved socialite Serena van der Woodsen makes her grand return to Manhattan after a secretive and voluntary retreat to a prestigious boarding school. Her closest friend, Blair Waldorf, grapples with mixed emotions about Serena’s comeback, having relished her reign as the top socialite during Serena's time away. Blair is uncertain about giving up her newfound status, especially since she has always harbored doubts about the chemistry between Serena and her longtime boyfriend, Nate. Tensions rise as old dynamics resurface in their elite social circle.