Lisa Vanderpump's SUR Restaurant is hotter than ever, but the conflict within her staff is at an all-time high when Jax jeopardizes the best relationship he's ever had. Stassi rallies the girls against James and Lala for fat shaming Katie, but Schwartz worries Stassi's return has brought out the worst in his fiancée. The group uncovers a bit of scandalous gossip.

Lisa organizes a dog charity event with the help of the SUR staff and Katie on board as her assistant. Brittany threatens to leave Jax for spreading rumors of her, and James embarks on an "Apology Tour" for the horrible things he said to Scheana and Katie. Tom Schwartz asks for a pre-nuptial agreement.

Stassi, Scheana and Kristen are all asked to be a part of Katie's bridal party, but Ariana is left out in the cold as a result of her friendship with Lala. Meanwhile, Schwartz serves up Jax and Sandoval a spicy revenge for their years of hazing, and Katie questions Scheana's loyalty after spotting her getting cozy with Lala.

Scheana shuts down Lala's attempts at friendship in an effort to please Katie and her bridesmaids. Meanwhile, James is flying high when his pageant queen girlfriend comes to town for the summer, but the fun doesn't last after the new SUR hostess claims she slept with him. Later, Katie lashes out at Schwartz after learning he's secretly seeking therapy, causing him serious concern for the upcoming wedding. Finally, Jax eagerly watches as James puts his job at SUR in jeopardy.

Katie and Schwartz take a trip to scout their wedding venue, but when Schwartz shows signs of cold feet, Katie hits him below the belt. Meanwhile, Tom takes Ariana on a romantic date but discovers that he wants marriage and kids more than she does. Later, Scheana learns a scandalous rumor about Lala, while Lala learns two scandalous rumors about James. Finally, Lisa advises Katie to mend her relationship before the wedding.

When terrorism strikes the Orlando gay community and threatens West Hollywood, Lisa puts her own safety aside to ride in the Pride Parade, rally SUR, and bring the community together. Meanwhile, Tom's jealousy over Ariana's bartending book sparks the nastiest fight of their relationship. Stassi plans a birthday trip to Montauk and James questions his friendship with Lala when the stories about her boyfriend continue to change.

Scheana and Kristen throw a surprise party for Shay and Carter, but Scheana gets surprised when Stassi and Katie attack her for sympathizing with Lala. Later, Jax reveals himself to be a certifiable sociopath on Stassi’s podcast. Finally, Lisa gives Brittany advice on how to deal with relationship jealousy, and Ariana stands up for Scheana.

Scheana questions going on a birthday trip with Stassi and Katie following a vicious fight with them. Also, Lala begins to dread Ariana's Sonoma birthday getaway upon discovering she'll be stuck with Jax, and James pleads to get his DJ job back.

Sandoval, Schwartz and Jax vow not to let Lala’s no-show ruin Ariana’s rowdy, NASCAR birthday weekend in Sonoma. Meanwhile, Stassi’s Montauk birthday trip is off to a rocky start when she breaks down in tears over her recent split, and Katie and Kristen fail to find Stassi an eligible Hamptons suitor. Later, Lisa learns troubling news about Lala’s situation, and Scheana feels like an outsider when she doesn’t embrace Stassi’s birthday traditions.

Stassi continues her birthday trip at a Montauk clambake, where Katie finds Stassi potential new bachelors and Scheana and Kristen commit some seafood faux pas. Lala finally resurfaces to explain her disappearance, but Lisa isn't buying her wild lies. Ariana celebrates her birthday with Sandoval and Schwartz at a thrilling NASCAR race, but things grow tense after Jax disrespects Brittany. Later, Kristen, Katie and Scheana party at the Wirkus Twins' summer house, and sparks fly when Stassi finds herself alone in a hot tub with a handsome, young and successful New Yorker.

Kristen upsets Brittany by using a picture of Jax's genitals in her comedy show. Meanwhile, Lala returns to SUR to apologize for missing Ariana's birthday, but Tom refuses to forgive her. Later, Brittany's mom arrives from Kentucky and puts the pressure on Jax to join a church and marry her daughter. Finally, Lisa surprises Katie with a risqué bridal shower gift and Ariana drops a bomb on Stassi, leaving her stunned.

Sandoval decides to celebrate his birthday with a "Fund-Rager" to raise money for a good cause; Scheana accuses James of cheating; Kristen hosts a roast for Jax; Katie decides to get a medical marijuana card.

Schwartz tries to make peace between Ariana and Stassi, but Katie gets annoyed when Ariana refuses to play nice. Meanwhile, James is excited to play his biggest DJ set since being fired from SUR, but the gig is ruined when Jax, Scheana, Kristen and two alleged mistresses ambush James to expose his cheating ways. Finally, Lisa gives Katie valuable wedding advice and Schwartz gets his prenup, only to learn that he doesn't have much to protect.

Stassi gets some relationship advice from her little brother. Sandoval attempts to reignite his career by diving back into modeling and acting. Pandora throws Katie a spa day but things grow tense when Ariana refuses to apologize to Stassi and Katie's attacks brings Scheana to tears. Sandoval, Jax and Ariana raid Lisa's closet to fulfill Schwartz's dream of dressing in drag for his bachelor party.

Scheana throws a pre-New Orleans pool party but when Tom and Katie's fighting reaches a new level, the group wonders if they should get married at all. Meanwhile, when Lisa allows James to DJ a party at PUMP James makes a play to get his old job back. Later, the bachelor/bachelorette party kicks off with plenty of Bourbon Street debauchery, but Sandoval stirs up trouble when he tells Katie she needs therapy. Finally, Stassi confronts Jax about his past mistakes resulting in tears from Jax and jealousy from Brittany.

A gator tour with Ariana and the groomsmen has some bite when talk turns to Schwartz's relationship troubles. Also: Kristen hires a female stripper while the men dress in drag; and Katie's anger toward Schwartz is addressed, leading to an all-out fight.

The epic New Orleans blowout continues, with Schwartz and Sandoval fiercely refuting the cheating accusations. Stassi realizes her past fights with Katie caused her to miss a painful moment when Katie needed her most. Kristen confronts Sandoval about trying to ruin her new relationship, and Stassi pays her dad and grandmother a visit. Katie and Schwartz bury their issues on a wild last night in Nola. Back in LA, Lisa talks to Ken about partnering up with Tom Sandoval to open a new bar.

Lisa declines to officiate Katie and Tom's wedding, which compels the couple to re-examine their entire relationship. Also: Stassi fumbles through her first blind date, and Lisa organizes a steamy SUR photo shoot, featuring Tom and Ariana wearing nothing but food.

When Lala makes a surprise return to SUR, Lisa makes it clear that her behavior will no longer be tolerated. With Katie and Tom's wedding just days away, Jax and Sandoval arrange to fly in Schwartz's brothers as a surprise. Scheana announces her plan to have a baby despite her relationship issues with Shay, and Stassi poses for a nearly-nude photo shoot. Katie and Tom arrive at their wedding venue only to be greeted by a very large bill.

Katie and Tom's wedding is finally here and the whole group comes together to show their support. Jax and Tom give Schwartz the ultimate wedding surprise when they fly in his triplet brothers. Meanwhile, Stassi is moved to tears when she and Lisa finally bury the hatchet. Finally, Scheana insists her relationship with Shay is perfect, but Lisa suspects she may be hiding something

Lisa officiates the ceremony that only Katie and Tom could pull off. Jax re-evaluates his relationship, and Ariana considers taking her relationship to the next step. Lisa offers the Toms the business opportunity of a lifetime, but Schwartz fears making two commitments in one day. Scheana reveals a secret about her marriage that will change her life.

Andy Cohen seeks the truth about the Kristen-and-Brittany hookup and Katie's attack on Schwartz's manhood; James addresses the cheating rumors; Lisa Vanderpump recalls celebrating Gay Pride in the wake of a tragedy; Lala makes an unexpected return.

Andy Cohen talks to Lala about rumours she is dating a married man. Stassi's brother joins the reunion and Brittany expresses her anger with Kristen. Scheana confronts Katie about her drinking and Ariana calls Stassi out for being manipulative.

Andy Cohen finds out why Lisa initially refused to officiate Katie and Tom's wedding. James lashes out at Jax and Kristen, Ariana explains why she won't marry Sandoval, and Scheana shares an emotional moment with her estranged husband, Michael Shay.