Cori confronts Sandy about letting her down at their anniversary party; Amy's son gets fired; Dr. Greenberg pulls the wool over Gail's eyes; Susan sees a new side of Jonathan; Liza plans a moving-out party.
Susan's husband, Jonathan, is out of control, and the others are fed up; Amy turns the tables on Andi; Gail worries her husband is backsliding; on the eve of their 20th anniversary, Cori forces Sandy to come clean about his dirty text message.
Issues center on Amy and her son. Elsewhere, Cori reaches out to Gail for advice about a potential cheating drama; Liza calls out her ex-fiancé for re-gifting an engagement ring; and Susan tries to make amends by inviting her friends to a birthday party.
Emotions run high on Fire Island, N.Y.; Susan's husband brings Cori to tears; the group tackles Amy's love life during an intervention; the women take part in a "walk off" at a drag show; Susan makes excuses for her husband's bad behavior.
Liza is on the hunt for a man while Amy struggles to fix the one she's got; when Cori and her husband host a dinner party, Susan's ex-con husband brings a major revelation to the table.
The women bid farewell to Gurney's Montauk Resort, but not before Susan and Liza settle a score in the sand; Cori's spa teeters on the brink of disaster; Liza confronts her fears as her old life is ripped away.
Everyone has secrets-except this tight-knit, ultra-wealthy group of friends and rivals who know everything about each other. But that's just the beginning of the drama for this tangled group as they negotiate life-altering transitions from marriage failures to launching rival businesses to the ongoing hunt for love all under the judgmental eye of lifelong friends who should have their backs.