Filmed entirely in New York and based on the popular series of young-adult novels by Cecily von Ziegesar, "Gossip Girl" revolves around the privileged prep school teens on Manhattan's Upper East side and the anonymous blogger, Gossip Girl, who provides them with the latest rumors about their highly exclusive inner circle. In the series premiere, Gossip Girl is busy spreading the news that "it girl" Serena van Der Woodsen has returned to Manhattan after a mysterious and self-imposed exile to boarding school to support her brother, Eric Van Der Woodsen who is a patient at Ostroff Treatment Centre. Serena's best friend, Blair Waldorf, has conflicted feelings about her friend's return since she has enjoyed being the Queen Bee during Serena's absence and might not be ready to relinquish her new position on the social ladder, not to mention the fact that she has always suspected there may be unspoken feelings between Serena and her longtime boyfriend, Nathaniel 'Nate' Archibald. These feelings are confirmed when Nate confesses to Blair that he had sex with Serena the night before she left while at the same time Charles 'Chuck' Bass, the bad boy, reveals to Serena that he spied on them while they were having sex. A furious Blair forbids Nate to talk to Serena if they want to mend their relationship which forces Nate to suppress his feelings. Social circle outsiders and siblings, Daniel 'Dan' Humphrey and Jennifer 'Jenny' Humphrey move in with their dad, Rufus in Manhattan when they come back from visiting their mom in Hudson. Dan has a longtime crush on Serena and his wishes are answered when he scores a date with her and decides to take her to his dad's band- Lincoln Hawk concert while Jenny works for Blair to get an invitation to the long awaited Kiss On the Lips party where Chuck tries to force her to make out. Serena and Dan crash the party, much to Blair's disgust, and Dan and Chuck get into a fistfight. Serena's mother, Lily Van Der Woodsen confronts Rufus, his long past ex about the fact that their children are dating.