Gizelle and Charrisse’s friendship hangs in the balance following Gizelle's shocking accusation that Charrisse is cheating on her husband. When the two ladies finally get together to talk, all bets are off! Meanwhile, Ashley’s involvement in a new charity threatens her responsibilities to her and Michael’s restaurant, causing tension in their marriage. Also, Robyn and Juan adjust to their new lives outside of Potomac, while Karen and Ray butt heads as they hunt for a new home.

Gizelle finds a new love interest in an old friend, while Ashley and Michael's inability to mix business with pleasure continues to create tension in their marriage. The women (finally) attend Katie's Casino Royale event, where they are less than impressed. Meanwhile, Karen organizes a high-class high afternoon tea in hopes of avoiding any low-class antics, but Gizelle gets her claws into Charrisse's new friend Monique -while Karen questions Robyn's loyalty--causing things to get a little improper.

The ladies of Potomac get decked out in their best hats and are off to the races for one of Baltimore's elite events, The Preakness Stakes. Charrisse continues to reinvent her life by gifting herself a new champagne room. Karen welcomes her daughter with open arms, when she returns home for the summer. Robyn struggles to answer questions about her relationship status with Juan. Meanwhile, Monique heads to the "Dirty South" to celebrate her husband's induction into the Alabama Hall of Fame, where she also reunites with her "Monster-In-Law" for the first time in months.

When Gizelle's mom comes to visit, she finds herself on a date with her new boyfriend AND her mom. Charrisse a.k.a "Cha-Cha" throws her daughter a lavish Sweet 16 birthday party, but when her elusive husband shows up at the party, it becomes too much for her to handle. Meanwhile, a hookah lounge fête turns sour when Ashley's prodding about Eddie puts Charrisse on edge and Monique shuts down Gizelle's hazing antics.

Monique hosts all of the ladies for a friendly card game of spades, but this house of cards comes crumbling down when she is pushed to kick Gizelle out of her home. Charrisse attempts to move forward with her life by prematurely announcing her divorce to a room full of strangers.  Karen throws a special celebration for her mother's 70th birthday, meanwhile, tensions arise when Ashley confronts Robyn with rumors about Juan.

After Gizelle is kicked out of Monique's party with her coat between her legs, Ashley continues to shuffle the deck -- and deals Charrisse a low blow about her marriage. While Karen tries to find a buyer for her "outdated" home, Monique lands right in the middle of Potomac with a $4.7 million mansion. Worried about their friend, Gizelle and Charrisse decide to host a “Juantervention,” causing Robyn to take a hard look at her unconventional relationship. Should she stay or should she go?

While Charrisse struggles to break the news of her marriage troubles to her daughter, Monique and her husband Chris try to reconnect as a married couple by returning to where they started. Karen shocks the world of Potomac by revealing her most guarded secret, leaving the rest of the ladies speechless. Armed with Gizelle by her side, Robyn decides to pay Ashley a visit to her restaurant. The pleasantries quickly go out the window as Ashley and Robyn get into it over spreading rumors, gossip, and emu!

Ashley and Michael's marriage is tested when she unveils a new menu for their restaurant at a press event and Michael attempts to shut it down. Gizelle and Karen head out for a double date where the truth comes out about Gizelle's date. Meanwhile Robyn questions her home life and identity after a birthday dinner for her mom. Golf balls fly when Karen attempts to mend fences between Monique, Gizelle, Ashley and everyone.

A "bonding" excursion to Bermuda turns cold when some of the women are shut out of the trip. Robyn makes a critical relationship decision. Monique and Gizelle at last address their issues. The ladies take a sunset cruise.

A sunset cruise hits rough waters when Charrisse corners Karen about her overbearing hosting duties while in Bermuda. Also, Robyn discovers many men are interested in her. In Potomac, Michael makes changes at the restaurant, and Karen breaks news about her coveted Potomac address.

The ladies question Karen's quick move out of Potomac after she reveals the location of her new home. Robyn finally confronts her ex-husband Juan about their relationship and is surprised by his confession. Monique shows off her new Potomac home, while Gizelle searches for the courage to break it off with her boyfriend Kevin. The women attend an "exotic" anniversary party at Karen's new home and are shocked to discover her new life outside of Potomac.

The ladies revisit this season’s highs and shady lows as suspicions surrounding Karen's move are revealed and the question of who will claim the new title of “Grande Dame of Potomac” is answered. Gizelle and Monique go head to head, while Charrisse disputes cheating allegations. Rumors continue to swirl about Robyn and Juan’s relationship, leading Robyn to call out Ashley for her meddling. And the reunion takes a shocking turn when Charrisse accuses Gizelle of having an open relationship in her first marriage.

The two-part reunion concludes with a mixture of insults and apologies when the husbands join the ladies on stage. Juan finally tells his side of the story and expresses his feelings about his relationship with Robyn. Monique attempts to put Gizelle in her place once and for all, and she also drops a sassy freestyle rap that ruffles everyone's feathers.