While an incident at a nearby school finds all eyes on Gossip Girl, Julien and Zoya team up for Halloween. Audrey panics over bad news, and Obie grows suspicious of Zoya's new friend.

A Christmas visitor threatens to upend Julien’s life, while a new friend pushes Zoya to chart her own path. Ahead of a bombshell drop, Kate, Jordan, and Wendy clamor for control of Gossip Girl.

As the crew looks forward to a fresh start in the new year, a debutante ball threatens already fragile bonds.

Zoya spends more time with Shan's family--much to Nick's annoyance--while Max's parents host an important dinner that descends into chaos.

Though finally the new queen of Constance, Monet yearns for a real rivalry with Julien. Meanwhile, Obie asks for Julien’s help managing their friends ahead of meeting Grace’s family.

Julien struggles to show Grace’s true colors to Obie. Audrey and Max suspect Aki is keeping a secret. Zoya learns of Nick’s betrayal.