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 and Shannon come face-to-face in a heated debate. Alexis shares details of her “promised ring.” Jenn’s parents come to visit and help the kids adjust to Ryan’s home. Gina fears her professional reputation is at risk after vouching for Jenn. Heather and Shannon try to repair their friendship. New housewife Katie accidentally fuels the fire when she reveals Jenn is harboring a grudge against Gina.

With tensions lingering between Gina and Jenn, the ladies get their aggressions out in a flag football match; Shannon grapples with the fact that Alexis seems to be taking over everything that was once hers; Gina follows through on a tough decision.

After Katie shares controversial information about Heather, the two come head-to-head at Katie's golf event; Jenn is upset with Emily for her comments about her financial woes.

Tensions are high when Gina is caught between Katie and Heather after the staged paparazzi allegations; Emily and Shane celebrate their 15th anniversary; the Tres Amigas come together for the first time, but things quickly go sideways.

Gina, Heather and Emily whisk Shannon away for a relaxing girls trip in La Quinta, only for Gina to find herself in quite the mess with Emily and Heather; Tamra, Katie and Jenn head to Tamra's Big Bear house.

In La Quinta, Shannon breaks down over the impending lawsuit with John, and tension between Gina and Emily finally bubbles over; the ladies bond over divorce, but when they pack up to leave, Alexis gets a call from John that sends her spiraling.

Emily analyses her harsh behaviour towards Jenn; Shannon gets a breathalyzer installed in her new car; Katie takes her daughter to legally change her name; the ladies reconvene for a special murder mystery-themed party.

The ladies head to wine country for Heather's fundraising event with Family Equality; Jenn has a court date to determine her financial future; the group must figure out how to support Shannon and Alexis during a lawsuit deadline.

Shannon's lawsuit takes a turn as she deals with the aftermath of the video news; Katie wants Heather to finally hear her truth, causing an upheaval in her friendship with Gina when a new rumour comes to light about Gina's career.

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 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.

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.

Tamra and Heather question Shannon's radio interview regarding the lawsuit and her DUI.

Shannon's 60th birthday extravaganza continues; Tamra and Shannon continue their friendship war; when secret texts are exposed that allege Tamra dug up dirt on Ryan, Jenn confronts Tamra in an explosive showdown.

Jenn demands answers about the background check on Ryan, but Tamra explains the twisted truth as Shannon departs from the group to meet up with her daughters; Heather learns that Katie is spreading rumours about her that involve the kids.

Jenn returns from the Bahamas and announces her engagement; Alexis and Katie host a party; Gina and Travis discuss the future of their family; Ryan makes headlines when his name is involved in a national bombshell that sends shockwaves in the OC.

Shannon and Tamra argue about Tamra's DUI incident; Heather leads the group in confronting Katie on shocking headlines; Jenn finds herself under pressure as her fiancé's FBI investigation becomes a topic of discussion.

The reunion continues with Jenn questioning her friendship with Tamra; Emily addresses Heather about the fashion show; Emily and Heather interrogate Katie; Alexis Bellino joins the women.

The reunion concludes with Shannon and Alexis at odds over lawsuits and dating; emotions peak when Tamra and Shannon address their friendship; unseen footage of John's interview stirs reactions.