Tamra Judge is back, but her return to the group proves rocky when she accuses Shannon of ghosting her; Emily adjusts to being a full-time mum; Heather wants to know where her friendship stands with Gina; the ladies meet Jennifer Pedranti.

Gina and Emily bond with Jenn and learn about the reality of her complicated relationship; Heather prepares for her twins to leave for college; Shannon and Tamra meet to hash out their issues; Tamra throws her composure overboard.

Tamra regrets her behavior toward Shannon, and Jenn urges her to apologize and invite Shannon to the closing party; with her twins' college departure looming, Heather contemplates the next chapter of her life.

Tamra takes the women to a ranch in Montana; tensions arise when Heather learns that her career is being dissected; Gina makes a point to connect with Jenn; Emily helps her daughter Annabelle with her aspiring modeling career.

While the ladies take on ranch-hand tasks, Gina warns Heather about Tamra, whose comment about Heather's career puts Taylor in the hot seat; Gina and Jenn hash out feelings about infidelity; Shannon and Tamra give their friendship another shot.

The adventure continues in Montana when the ladies partake in fly-fishing and white-water rafting; Heather helps Gina deal with pent-up emotion, but later feels betrayed and contemplates their friendship moving forward.

Gina questions her friendship with Heather; Emily reconnects with her estranged mom; Heather throws a dinner party at Nobu, but the fancy ambiance quickly turns tense when Emily and Gina confront Heather about her behavior.

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.

Jenn and Tamra put their issues to rest and plan a triple date. Eddie confronts Ryan about all the rumors. As Heather nears the finish line with her L.A. penthouse, she ventures into new territory with a unique business venture and a surprising offer. Shannon strategizes how to handle discussions of her romantic relationship. Emily and Shane work through parenting issues. Gina brushes up on her real estate skills.

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.

Shannon prepares for a fiesta party while dealing with the aftermath of her relationship issues going public; Tamra, Jenn and Taylor support Shannon at her party; Emily and Gina attend a fundraiser for the California Innocence Project.

Taylor hosts a pumpkin-carving party where Gina confronts Shannon for starting rumors about her past indiscretions; the ladies question Heather about recent paparazzi photos; Jenn raises concerns about marrying Ryan; Shannon confides in Tamra.

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.

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.

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.

They may live in the lap of luxury, but life isn't always perfect for the women who reside in one of the wealthiest enclaves of the U.S.