Welcome to New York City's Upper East Side, where the girls are dazzling, the guys are gorgeous, and the summer heat is the perfect excuse to throw a fabulous roof-deck pool party. As if we need a reason! It's our last summer together before heading off to college, and things are sizzling - no, it's not just the weather. Despite that steamy kiss on graduation night, Blair, Serena, and Nate have gone their separate ways...though not for long. Blair is off to London with her English Lord boyfriend, Serena's about to become a movie star - as if she wasn't a star already! - and Nate's rolling up his well-worn khakis and heading to the Hamptons. Back in New York, Dan and Vanessa are rekindling their love. Fiery! Watch out, this summer is going to be hotter than ever.