Still in the Hamptons, LuAnn and her kids get a surprise visit from Rosie who is no longer their housekeeper but is still concerned about the family as a whole. The Singers and the Van Kempens meet for dinner and the subject of a comment Mario made to LuAnn comes up. Bethenny and Jason head out for a romantic dinner and Jason asks Bethenny to move in with him. It's Labor Day weekend and both Ramona and LuAnn decide to throw parties - the issue becomes which party will the ladies go to?

 Ramona kicks off fall in New York City with a rooftop cocktail party. Things are still tense between Jill and Alex as this is the first time they've seen or spoken to each other in months. The newest Housewife Cindy Barshop, owner of Completely Bare spas, is having an art party and all the girls show up, invited by Ramona, Cindy's friend.