Vicki's daughter gives birth to a baby boy. Tamra moves in with her new business partner and fiancée. Heather hosts a clambake and doesn't invite Alexis, which leads to tension in the group.

Vicki becomes the topic of gossip; Vicki and Tamra try to repair their friendship; Gretchen visits Slade.

Alexis is invited to be the first to meet Vicki's new grandson; Tamra tries to repair her relationship with Vicki; Heather wants to have her home featured in a magazine.

Vicki invites Alexis to a party at Tamra's new gym; Gretchen and Slade deal with personal issues; Tamra rethinks her decision to invite Alexis to the party when things get out of control.

Tamra's explosion at the party has widespread effects, leaving Vicki torn between Tamra and Alexis; Gretchen goes to New York to support Slade; Lydia encourages Alexis to make amends.

Alexis struggles after the events at Tamra's party; Vicki doesn't show at the new wine business, leaving Tamra angry; Lydia celebrates with her mom; Heather receives an exciting offer, which is soured by Terry.

A fight between Tamra and Vicki ends their Malibu trip; Alexis and Jim open their trampoline park; Heather and Terry hit a roadblock.

While Heather is in Hollywood filming a guest role on Hot In Cleveland, Terry struggles at home alone with the kids. Meanwhile, Alexis pursues her own acting career in Orange County. Gretchen and Slade ruffle some feathers when they are inconsiderate on Heather’s big day. Then, Lydia confronts her mother about her marijuana smoking habit.

Vicki is torn between spending time with Brooks or babysitting her grandson; Lydia convinces Alexis to talk to Tamra; Gretchen visits a fertility doctor; Tamra gives a speech at the Los Angeles Women's Expo.

Tamra and Alexis confront each other; Heather and Gretchen disagree while planning Tamra's bachelorette party; as the ladies head to Mexico, Gretchen gets some shocking information about Vicki's past.

While still in Puerto Vallarta, Vicki, Lydia and Tamra continue their night away partying — while Heather and Gretchen continue to sit back in the limo. Gretchen tells Vicki how much she was annoyed by her antics but Tamra shocks the ladies when she tells the specifics of her past to Gretchen. Back at the resort, Mexican strippers arrive to spice up the night but Lydia is a bit nervous about the whole situation. Alexis, home in Orange County, asks Jim for an item that he is unwilling to purchase.

Heather and Alexis meet at the coffee house to fix their friendship. Briana prepares emotionally for Ryan's upcoming deployment. All the ladies, and husbands, come together for Lydia's salsa dance party but Lydia brings her claws out once Slade starts to make rude remarks. Brooks surprises Vicki at the party with flowers and the room begins to fill with rumors regarding her love life. Gretchen is told that Alexis will be at Tamra's wedding dress shopping trip and questions whether she will attend or not.

Tamra is frustrated with the slow progress on her fitness studio, while Heather's acting career speeds ahead as she lands another guest role on a popular sitcom. Tamra shops for a wedding dress with the whole gang, but her beautiful day turns ugly when Lauri drops a bomb on Vicki about who Brooks is spending time with. After dinner, Tamra and Heather question Gretchen's honesty.

Lydia goes on a ski vacation with the ladies, Heather and Gretchen get into a heated argument, and Tamra confronts Vicki about the rumours she's spreading.

Lauri's accusations cause a fight; Gretchen questions her friendship with Tamra; Heather guest stars on a new sitcom.

Alexis comes face-to-face with Gretchen; Heather and Terry receive a surprising offer; Vicki struggles to keep things professional with Brooks; Gretchen plans a surprise marriage proposal for Slade.

Gretchen proposes to Slade; Heather and Terry tell the kids that they've sold the house; Vicki hears Slade insult her on his radio show; Vicki's Winter Wonderland party is full of surprises.

Gretchen and Heather argue; when her husband faces the ladies, Alexis is brought to tears; Briana's husband verbally attacks a party guest; Tamra and Gretchen accuse each other of lies; Vicki and Lydia ambush Slade.

Gretchen and Vicki vie for Tamra's friendship; Lydia is forced to defend herself; Lauri Petersen returns.

Briana and Vicki's boyfriend confront each other, leaving Vicki in tears.

Never-before-seen footage, including Alexis preparing for her audition, Lydia confessing about herself and Doug, and Vicki and Gretchen battling for the title of Tamra's BFF.