A look back across the seasons before the series finale.
The Series Finale begins with the stars and executive producers bidding farewell to the Upper East Side in a look back at the show’s many unforgettable moments. Then, in a fashionable farewell to remember, our favorite Upper East Siders join forces for one last soiree, and the shocking identity of Gossip Girl is finally revealed
After a run-in with an increasingly paranoid Bart, Blair grows alarmingly concerned for Chuck’s safety. However, feeling confident that his father will never hurt him, Chuck makes a deal that could change his life. Wanting to make things better for Chuck, Blair devises a plan with the help of Serena, Georgina and Sage to try and get what they need out of Bart. Meanwhile, Nate's financial dilemma finally lands him in a place that he never thought he would be.
Serena and Dan decide to throw their first Thanksgiving together, inviting only their closest friends, but everyone seems to have their own agenda for attending.
Serena and Dan realize that they need to make amends with the people they have wronged. Blair has one last chance to prove to her mother her worth as a fashion designer and with Serena’s help, comes up with a plan to make her line the “it” look for Sage and her friends. Chuck is close to getting the evidence he needs against his father, until one of his closest allies reveals his plan to Bart.
Eleanor visits and puts unexpected pressure on Blair. Meanwhile, Serena helps Dan go apartment hunting, and old feelings surface Chuck asks Nate to secure some incriminating evidence against Bart and Rufus and Ivy prepare to open their art gallery.
After Eleanor gives Blair an ultimatum, Blair is even more determined to remedy Waldorf Designs' problems by making a splash with a dress at the upcoming Cotillion, but a shocking revelation at the ball affects everyone. Serena becomes worried about Steven's attitude toward her, but after some investigating she discovers the surprising reason why. Chuck finds an unlikely ally as he tries to drive a wedge between Bart and Lily's relationship to help expose his father's secret. Meanwhile, Dan publishes another article, but the effect is just the opposite of what he was hoping for.
Chuck’s continued investigation into his father’s dealings leads him to an unlikely event with Manhattan’s elite, where he hopes to find the one person who can tell him the truth about Bart. Serena and Steven decide to reveal their romantic histories so they aren’t surprised by anything, but neither was prepared for what they uncovered. With The Spectator in jeopardy after Dan decided to publish elsewhere, Nate must make a difficult decision to keep it in business.
Unexpected scheming results in a scandal on the runway of Blair's first Waldorf Designs fashion show Serena has a difficult time befriending Steven's daughter Chuck investigates the clue that Amira left behind.
In an effort to prove herself, Serena hosts the Central Park Conservancy's big gala Blair gets ready to debut her fashion line Georgina helps Dan secure meetings with publishers Chuck tries to convince Amira to help him.
In the sixth-season opener, Blair and Chuck part ways after making each other a promise. Meanwhile, Georgina assists Dan with his tell-all book Nate reignites his battle with Gossip Girl and the gang rallies together to locate a missing Serena.
In the fifth-season finale, Blair makes a choice between Chuck and Dan. Meanwhile, Lily comes to a decision about her marriage and Nate suggests that he and Lola move in together.
A busy Blair asks Serena to impersonate her at a meeting. Elsewhere, Ivy and Lola join forces to help Chuck exact revenge and Nate makes a choice regarding his future.
Diana and Jack may be harboring another secret, and Chuck and his pals want to unearth the details. Meanwhile, Dan gets the opportunity to spend the summer in Rome on a fellowship
Blair plots to ensure her social status remains intact, while Lily tries to solidify her family by hosting a gathering for them. Elsewhere, Nate looks into Diana's background and unearths a surprise.