On the first day of school at Constance Billard, Jenny is forced to make her rightful place as the new Queen Bee of the Mean Girls. Unfortunately for Jenny, Blair is more than happy to intervene when news reaches her that Jenny may need her help. Meanwhile, Lily finally returns home to Rufus and her family to find that things are definitely not as she left them, especially after learning that Serena has decided against going to Brown University. Elsewhere, a famous teenage movie actress, Olivia Burke, enrolls at NYU and is assigned as Vanessa's new roommate in which Olivia hopes for a somewhat normal college experience. Also, Olivia's best friend Ursula, another actress co-starring in Olivia's latest movie, befriends Serena.