The ladies hit the Hamptons for a weekend of fun and nostalgia. After selling the last pieces of her recently-sold estate, Luann shows off her new home to all the ladies at an informal housewarming party. Dorinda and Sonja finally meet each other at Ramona's house where she's hosting the two for the weekend. Everyone agrees that the situation with Mario has brought out a softer side of Ramona, which is evident when she pulls Luann aside to talk about the past. Things get cooking when Carole flirts with Luann's much younger personal chef. The ladies haven't seen Bethenny in a long time and when tensions surface with Ramona at Luann's party, lines are drawn.