Season 1 revolves around the lives of a group of privileged Manhattan prep school teens Serena van der Woodsen, Blair Waldorf, Dan Humphrey, Nate Archibald, Jenny Humphrey, and Chuck Bass, starting with the return of Serena, the Upper East Side's most notorious party girl. When people still wonder why she leaves mysteriously and then comes back, it is soon revealed, together with plenty of confusing issues related to friendship, romance, triangle love and sex orientation among the group through the eyes of an all-knowing blogger - Gossip Girl.