In Amsterdam, Kim and Lisa Rinna continue to aggravate each other, culminating in an explosive dinner that causes Kyle to flee the scene; the women enjoy the local space cakes, but the fun sours when Brandi blows up at Kyle.

The women split into two groups to explore Amsterdam; Eileen confronts Lisa Rinna about her lack of support; all of the unresolved issues come to a head while the women are at dinner on a riverboat; Brandi playfully slaps Lisa Vanderpump.

The women are forced to set aside their differences and work together as teams while taking part in Yolanda's scavenger hunt; the women embark on a group trip to Amsterdam; at a charity gala, Kim reproaches Lisa Rinna for talking behind her back.

The Beverly Hills housewives continue reliving good times and airing their grievances. Eileen discusses how Brandi went from a high-school fan to a wine-tossing foe. Kim delves into her own issues with the soap stars and goes after Lisa Rinna. Kim and Kyle vacillate between anger and tears.

Lisa Vanderpump's adopted son, Max, decides he wants to take a DNA test to discover his heritage; Brandi and Kyle trade accusations while visiting Kim; Brandi shows up uninvited to Kyle's gay mixer where insults are exchanged.

Yolanda reveals the difficulties she faces with Lyme disease; Kim declares she takes more pride in the roles she chooses than Lisa Rinna; Lisa Vanderpump and Brandi get into an argument; Yolanda defends her daughter against one of Brandi's comments.

The women laugh about who has the dirtiest mouth, Kim reveals threatening text messages she received from Lisa Rinna after Adrienne's party, Kyle and Brandi argue about Amsterdam's space cakes, and Kyle and Kim's relationship continues to unravel.

Lisa Vanderpump is still wary of her former friends but begins to reconnect with Yolanda and Kyle; all of the women come face to face at Kyle's extravagant White Party; the annual event brings together the original Beverly Hills housewives.

Kim and some good looking movers help Brandi move into her new house whilst Kyle and her family fly in a private plane to Lake Tahoe.

The women attend an over-the-top party thrown by friend Adrienne Maloof; Lisa Vanderpump confronts Brandi about the slap delivered in Amsterdam; Kyle gets angry with Lisa Rinna for not corroborating that Brandi is worried about Kim's sobriety.

Previously unseen clips of the ladies are revealed. Eileen mulls over winning an Emmy, Kyle's daughter wants to pursue an acting career, the women snoop into Yolanda's past and Kim confronts Lisa Rinna.

Lisa Vanderpump refuses to accept Brandi's apology; the women return home after a final dinner in Amsterdam; Brandi gets bad news about her father's health; Kyle angrily reveals to Kim what Brandi has been saying behind her back.

Kyle returns home early from Spain to attend Kim's daughter's wedding; Eileen reprises her role as Ashley Abbott on "The Young and the Restless;" Yolanda deals with the fallout from her daughter's DUI.

Brandi and Lisa Vanderpump meet to discuss the status of their relationship; Yolanda struggles to trust Bella after her DUI charge; Eileen and Brandi tell stories about their marriages, but Brandi is dismayed by one of Eileen's revelations.

The women visit a spa in Santa Barbara, Calif., but the afternoon turns tense; Eileen invites everyone to her Malibu home for a night of poker; Kim's erratic behavior puts everyone on edge, leading to a confrontation between Brandi and Kyle.

Kyle and Brandi argue over Kim in the wake of Eileen's poker party; Lisa Vanderpump's dog, Rumpy, returns from puppy training camp; Lisa Rinna hosts a jewelry party, where Brandi gets called out over her recent behavior.

Eileen organizes a table-read for her husband's latest Hollywood script, and emotions run high; Brandi agrees to a 21-day cleanse but attending Lisa Vanderpump's surprise birthday party causes her to second-guess her decision to stay sober.

Yolanda and Kyle are apprehensive about dropping their daughters off at college; Lisa Rinna shoots a movie with her husband Harry Hamlin and magician Penn Jillette; Brandi checks out her ex-husband's new TV reality show.

Lisa Vanderpump arranges a private birthday dinner for Lisa Rinna at PUMP. Harry Hamlin shows up with just the perfect gift. Brandi settles into her new home.

Lisa Rinna returns to her hometown of Medford, Ore., to visit her ailing parents; Eileen gets a chance to meet everyone at Kyle's barbecue party; Brandi pressures Lisa Vanderpump for an answer about her housewarming party.

An unexpected guest shows up at Brandi's housewarming party; Lisa Rinna hosts "Access Hollywood Live;" Eileen experiments with a new form of exercising; Lisa Vanderpump hosts a charity event at PUMP, where Brandi makes an unusual offer.

After the blow up at Kyle's gay mixer, the women discuss Brandi's influence over Kim; Lisa Vanderpump is nervous when her son receives his genealogy test results; the women attend Eileen's movie premiere at a suburban shopping centre.

Lisa Vanderpump asks Lisa Rinna to come with her as she receives a plaque on the Palm Springs Walk of Stars, Kyle ia concerned her coughing sister will make her sick.