Dorit unveils her new book cover, but not everyone is ready to celebrate this new chapter for her. Boz delights the group with her engagement announcement. Rachel and Amanda finally find common ground. The women reunite at Kathy's jewelry party where Dorit squares off against Kyle, Erika and Sutton. As decades-long friendships hang in the balance, the women of Beverly Hills face their greatest divide yet.

The ladies gather at Rachel's disco party after Italy. Kyle and Erika avoid Dorit, who rejects Sutton's peace efforts. Boz receives a life-changing surprise. Key absences may upstage Dorit's book cover reveal event.

After smooth sailing in the Hamptons, tensions rise when Dorit discovers Kyle has been talking behind her back. Rachel sits her boys down to discuss her divorce. Amanda throws herself into planning her extravagant wedding. Boz invites the girls to join her on a trip to Italy at a bellissimo Tuscan villa where Sutton learns that no good deed goes unpunished.

Rachel finally gets her wish with a Hot Girl Summer at a Hamptons club. Kyle and Dorit put their problems aside to enjoy the vibe. Boz and Sutton want to get to know the real Amanda, who finally sheds light on a tough time in her past. Erika and Sutton dine with Denise, who opens up about her volatile divorce. Erika stuns the table with a revelation of her own.

Dorit sits down with Mauricio in hopes of breaking through to PK; Sutton gets emotional while opening up to her daughter about her name change; Rachel invites Kyle and Dorit to the Hamptons for some fun and a break from her divorce drama; Amanda hosts a manifestation dinner to help the women understand her better, but the only thing she manages to manifest is unsolicited advice.

The tension continues at Dorit and Erika's birthday dinner as Kyle is pulled into the middle of Amanda and Dorit's drama. Rachel's tough exterior finally cracks. Sutton is put in the hot seat when Dorit calls her out for not having her back. Boz receives a heartbreaking update on her fertility journey.

Rachel hosts a glamourous psychic soirée for the group and revelations come when Sutton presses Jennifer Tilly about her comments made to Kyle in Sedona. Boz travels to Nevada in hopes of continuing her fertility journey. Dorit confronts Amanda about her remarks on her marriage, but emotions run high when Amanda discloses it's the anniversary of an unimaginable loss. Rachel's friend Natalie Swanston Fuller joins the group.

The ladies try to tap into the healing energy of Sedona, but Kyle & Dorit's friendship remains on the rocks. Bozoma and Rachel struggle with the desert heat while others embrace the elements on a hike to the vortex. Amanda shares information about Sutton's former assistant and discovers it's not just the heat in Sedona that's unforgiving. Jennifer Tilly turns to Kyle after a tense moment with Sutton.

Sutton plans a trip to Sedona, where she hopes to show the group how much she's changed. Rachel opens up about life as a boy mom. Kathy hosts a summertime dinner where Amanda talks her way into the hot seat. Dorit looks to Kyle for support while navigating her separation, but both women decide there's a better man for the job. Boz takes another shot at her fertility journey. Erika reveals she has a new love interest.

Dorit has recently filed for divorce and opens up to the ladies about her ex, their children and if she's ready for a Hot Girl Summer. Kyle is planning Alexia's wedding and navigating life with Mauricio. Sutton must reassess her friendships in the group after being cut off by her former bestie. A familiar face makes a fashionable entrance at Kyle's Summer Solstice Party as Kathy arrives with Rachel Zoe.