Lily and Rufus move up their wedding day, but someone or something will come between them. Can they overcome this and finally get married? Chuck uncovers Carter’s secret. Georgina traps Dan and Vanessa into one of her schemes. Blair suspect something not good about Bree and shares her concerns with Nate.
Blair ends up with Georgina as as her roommate in the dorms at NYU. While Serena and Chuck come to blows, so she joins forces with Chuck’s enemy, Carter. Nate and Bree try to take their relationship up a gear despite the animosity between their families.
Gossip Girl decides to send a shocking email blast in the graduation ceremony of Constance Billard and St. Jude’s, pushing Serena to device a devious plan of attack. The Mean Girls Club challenge Jenny to succeed Blair as Queen Bee for next year. Lily and Rufus struggle with their relationship after Lily’s betrayal. As for the cliffhangers, Blair and Chuck finally … and Serena is shocked by … and Georgina decides to … and Dan, Nate and Vanessa unknowingly …
Blair puts pressure on Georgina to making amends for her past bad behavior by helping her in an evil plan. The rivalry between Nate and Chuck over Blair reaches a boiling point. Lily makes a secret plan to help Rufus with Dan’s college tuition.
Georgina returns to the Upper East Side but it’s not the same Georgina we all knew, she’s changed. Chuck and Nate relationship is at a crossroad because of their mutual interest in Blair. Serena relationship with Gabriel get’s more complicated.