Following a tumultuous year, Dorit hosts the ladies at a retreat, hoping to get an eagle-eyed perspective on their issues. While Erika seeks to rebuild her life following her husband's indictment, she's forced to deal with the consequences her behavior has had on her friendships. Garcelle tries to navigate her relationships with her teenage boys. Kyle's new focus on fitness and self-care offers a sobering look at her home life.

Erika apologizes for spilling tea about Dorit's marriage, but PK's glitzy anniversary surprise may land him in hot water with his wife. Sutton seeks help from a matchmaker, but soon realizes that finding Mr. Right may be difficult.

Las Vegas starts with a bang as the women hold an intervention for Sutton, who is disappointed with her dating life. Erika treats the group to a VIP experience at a sexy show for Crystal's 40th birthday.

The women recover after a meltdown in Las Vegas, but Erika's elevator callout of Sutton leaves everyone floored. Dorit and Garcelle want Kyle to put her cards on the table about her marriage.

Still reeling from their tense exchange, Sutton isn't horsing around when she brings up rumors about Kyle's marriage. Erika comes to terms with her painful past during a tense visit from her mom. Crystal gets a tough talking to about her control issues with her brother. Garcelle throws a star-studded screening for her new movie, which is a night of celebration and major frustration for some of the ladies.

Kyle seeks insight into Sutton's confusing behavior. Dorit pours out a strong opinion of her own. Erika presses forward with reviving her public image. Garcelle is stunned when her son makes an admission about her divorce. After leaving her mark on country singer Morgan Wade, Kyle is confronted by Sutton about the state of her marriage.

As the weed dinner continues, Kyle and Sutton’s friendship seems to go up in smoke. Garcelle and Crystal struggle to make sense of Denise’s showdown with Erika. Dorit schools PK on their children’s future. Feeling let down by her friends, Kyle turns to sister Kim for support and advice about her family.

Crystal calls out Dorit for spreading rumors behind Sutton’s back, leaving both women fuming. Kyle seeks guidance from her life coach about her struggles with grief. Garcelle spends time with Jaid and his new girlfriend over dinner. Erika shares good news with her mother. The ladies come together to celebrate the anniversary of Sutton’s boutique as nurse anesthetist Annemarie goes toe to toe with her most difficult patient yet.

After enlisting a matchmaker, Sutton tries her not-so-steady hand at dating. Annemarie reveals which first impression left a bad taste in her mouth. Dorit is shocked at how far Kyle has waded into a new friendship. Tensions flare at Crystal's Taco Tuesday between Dorit, Sutton, Crystal and Garcelle. Erika comes to a boiling point with Denise.

Crystal’s Taco Tuesday heats up when Denise’s return brings back Erika’s fiery side. After rehearsing with her matchmaker, Sutton finds herself in tune with a new date. A tearful Kim asks Kyle to make amends with Kathy. After a war over words, Dorit and Garcelle meet one on one to hear each other out.

The women head to Ojai for Annemarie's birthday, as frosting isn't the only thing Sutton is licking. Dorit questions her marriage after PK's shocking admission in therapy. Kyle hosts a celebration of life event for her late friend.

Kyle and Sutton unpack the group dynamics while planning their upcoming trip to Spain. Erika hits the ground running as she sets out to rebuild her career. Dorit reintroduces the group to Homeless Not Toothless and hopes it will be less of a mouthful this time. Crystal finds her voice when confronting Annemarie, and the repercussions echo through the ballroom.

Adios Beverly Hills, hola España! Sutton takes the ladies on a fabulous getaway to Barcelona where Garcelle fears supernatural houseguests. Kyle's bold fashion choices leave Dorit questioning this new Kyle. Annemarie puts Crystal in the hot seat for talking behind the group's back.

Hearts are racing after Crystal's medical emergency, but nurse anesthetist Annemarie comes to the rescue. Dorit opens up to Garcelle, allowing the two to finally move forward. Disappointed in her friends, Erika gets tipsy ahead of dinner but wows the group with her erudite observations at the table. While planning her healing ceremony, Sutton is overwhelmed by old emotions, forcing her to find comfort in an unlikely friend.

Sutton holds a healing ceremony for the group to let go of the past, but a shocking admission stirs up old grudges. The ladies say adios to Spain with a Flamenco dinner where Annemarie asks tough questions. Back in Beverly Hills, Kyle opens up to Dorit about the cracks in her once rock-solid relationship.

Fresh off their trip in Spain, Sutton gets back in the saddle, both with her new horse and a second date. Garcelle agrees to give her boys more freedom, even as they prove they’re not quite ready for adulthood. Annemarie throws a blinged-out brunch where she and Crystal finally put their issues to bed. Erika’s tearful accusations leave Kyle and Dorit questioning their friendship.

In the midst of shocking headlines and hurt feelings, the diamonds of Beverly Hills come face-to-face for a tense reunion. Kyle addresses Erika's past comment about wanting Andy to "eviscerate" her on the couch. Dorit confronts Kyle about an ominous text message she received and the current state of their "close" friendship. Garcelle challenges Dorit and attempts to burst her bubble in order to get through to her. Annemarie swallows her pride when she apologizes to Sutton, but Crystal proves to be her most difficult patient yet.

The reunion continues as Sutton and Kyle's issues come to a head, jeopardizing their friendship like never before. The moment the conversation turns to Sutton's finances post divorce, Annemarie offers her opinion on the situation. When Dorit addresses rumors about her marriage and reveals details on her latest robbery to the woman, Garcelle finds herself in the hot seat for her questionable comments. As Erika celebrates her victorious comeback, she realizes that Crystal isn't quick to let go of her past.

The reunion concludes with a surprise appearance from familiar face Kathy Hilton, whose presence draws mixed reactions from the ladies. Kyle recounts their difficult road to reconciliation and what it took to work through past wounds with her sister. Emotions continue to run high when Kyle opens up to the group about her troubles marriage. Faced with tough questions about her separation and the state of her friendship with a famous country singer, it becomes clear to the woman that Kyle's future hangs in the balance.