Fall in NYC brings change to the Upper East Side. Blair keeps her social throne, Serena balances loyalty and ambition, and Nate navigates independence with whispers of old flings stirring envy. NYU feels the stir too, as Dan, Jenny, and Vanessa watch from the sidelines, Georgina waits to cause chaos, and Y/n —European elegance, Dior connections, and quiet prestige—arrives, promising to disrupt alliances and spark intrigue.