Tamra and Jenn try to find common ground between their men; Gina reflects on her ex-husband's new engagement; Shannon is rocked by a bombshell article about the lawsuit; Heather accompanies Terry to get rhinoplasty.

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Shannon and Vicki head to St. Louis for their live show tour; Heather and Alexis attend the GLAAD Awards; Tamra and Katie's daughters bond over similar childhood experiences; Jenn hosts a poolside party.

Tamra reveals more surprising information about Ryan, leaving Jenn to question her friendship with Tamra once again; Emily and Heather discuss body image; Shannon hosts a tea party to reveal she's taking almost everyone on a trip to London.

Gina hosts a circus party to get the group to move on from the disastrous end to their Mexico trip; Tamra and Heather's heated argument results in them ending their friendship.

Vicki gets a phone call that forever changes her life. Shannon offers an olive branch to Meghan when she hosts a Bunco party at her house. Meanwhile, Meghan moves into another house and Heather has an unorthodox date night with Terry that gets a little bloody.

At Shannon's 70's-themed party, disco fever takes on a whole new meaning when Shannon gets into a heated argument with Kelly about her rumor-filled past. While Vicki juggles work, babysitting her grandsons and nursing Briana back to health, she still finds time to "whoop it up" with the ladies, at least the ones who are speaking to her. Heather confronts Terry about his lazy parenting after he schedules a work trip for Mother's Day. With Jimmy out-of-town again, Meghan looks for support from her friends during her IVF treatments. Tamra tries to help Kelly mend fences, but winds up stirring the pot instead.

Kelly invests in a new business and goes to a Wellness Expo to practice her pitch. While Gina meets with a new lawyer about her DUI, Braunwyn and Kelly head to Las Vegas to support Emily at her dance performance. Then, the ladies travel to a wellness resort in Miraval, Arizona. At a sound bath, Kelly bonks Shannon over the head which leads to an unexpected trip to Urgent Care.

Part one kicks off by discussing the return of “Fun Shannon” and Shannon gives an update on her love life. Emily and Gina’s complicated friendship is dissected as they discuss their roller coaster season including Gina’s DUI, Emily’s marital struggles and Gina’s relationships in the wake of her separation. Meanwhile, Vicki grows agitated backstage waiting to join the ladies onstage. Once reunited, the ladies hear about Vicki’s love tank, and hash it out over the unforgettable trip to Miraval including the gong heard around the world.

Emily throws a pool party, and Tamra brings a surprise guest; Gina works through personal issues with her ex; Heather and Emily make peace; Shannon discovers that Heather may be discussing her relationship issues with John Janssen.

Heather throws a party to launch her HD Network, but tensions arise when Emily reveals an issue from the past; Jenn introduces Ryan to her mother; Tamra plans a trip to Mexico.

The trip continues as the ladies head to the Mexican jungle; Heather keeps herself in the hot seat after offending Emily; Shannon finally opens up to the group about her relationship with John; Vicki's surprise arrival turns sour.

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Braunwyn’s daughter Rowan makes her debut at OC Fashion Week with her clothing line Dark Rabbit. Shannon takes on the role of momager as she coaches daughter Adeline on how to walk a runway. Rowan and Adeline triumph, while Braunwyn and Kelly back each other up in an argument about Dr. Deb. Meanwhile, Gina gets a new look as she grapples with whether to reconcile with her ex or move forward with a new relationship. Eddie learns about Tamra and Braunwyn’s time in Del Mar. Emily and Braunwyn bond over a discussion about the father figures in their lives. Tamra’s son Ryan has a tattoo removed and agrees to go to therapy.

Jenn and Tamra co-host a party where the ladies dress as each other. Tamra pushes Eddie to figure out his next business venture. Heather informs Gina that Shannon is talking about Gina’s relationship. Vicki brings a keg to the party, kicking off a salacious game night. Shannon confronts Heather about revealing too much about her relationship, but fingers get pointed elsewhere, leading to an abrupt end to the party.

The ladies enjoy their final days in Mexico and travel to Tulum; Jennifer questions all of her relationships and hopes that a shaman can bring her clarity; Heather feels alienated by the group and her frustration comes to a boiling point.

Tamra tries to prove that Jennifer's relationship is not what it seems; Emily questions Heather's true feelings about the group; things get heated when Gina contemplates her future on the show after revisiting Shannon's comment about her family.

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The ladies gather to celebrate Vicki's birthday with a royal tea party; Kelly refuses to attend; at the party, Gina and Braunwyn clash, while rumors about Kelly have the ladies up in arms.

Shannon is doing her best to move forward as she faces the consequences from her DUI; Emily deals with a new gym obsession; relationships are put to the test as both Giana and Jenn explore new living arrangements with their partners.

Tamra, Vicki, Heather and Kelly travel to Glamis to celebrate Eddie's birthday. While the trip is supposed to be down and dirty fun, Tamra and Heather are still wary of Kelly's filthy mouth. After a long RV ride down, the ladies finally get some fresh air and see what the motor sports mecca has to offer. The next day, the ladies set out to explore the dunes, leading to a ride they will never forget. Meanwhile back in Orange County, lives are forever changed as Meghan receives the results from her pregnancy test and Shannon's holistic home has finally sold, leaving the Beador's two weeks to move out.

The ladies jet off to Ireland to explore Meghan's heritage and try their luck of the Irish. On a pub crawl, an over indulgence of spirits leads to a sobering exchange of words between Tamra and Kelly, ultimately pushing Tamra over the edge. With Kelly on the outs, the rest of the ladies try to salvage their first day in Ireland by enjoying a traditional Irish Hooley Night.

The reunion concludes with the ladies recounting their traumatic experience in Glamis. Old wounds are opened as Meghan finds herself on the defensive for her lack of sympathy towards Vicki after the accident. When the ugly drama of Ireland is discussed, emotions run high and Shannon is driven to her breaking point.

In Jamaica, Gina confronts Shannon at dinner about not being a good friend to Tamra during Eddie's health issues; Shannon feels betrayed when Tamra doesn't defend her; Shannon isolates herself from the group and misses bobsledding.