While her fiancé remains in the hospital, Gretchen receives a big-bucks, diamond-encrusted engagement ring in the mail. Meanwhile, with his mother away at a convention, Michael throws a pool party---only to get tattled on by one of the housewives. And the women gather at a racetrack, where a cold snubbing creates hot drama.
Jeana, Vicki and Tamra assemble for a Fourth of July getaway, resulting in fierce personal fireworks. Meanwhile, Gretchen vacations in the mountains and receives news about her fiancé. And the newest housewife arranges a birthday celebration for her daughter.
Gretchen throws a burlesque party, despite her fiancé's stay in the hospital. Meanwhile, the Gunvalsons eye a million-dollar yacht for purchase, but Briana has a sinking feeling about it all. And Vicki, Jeana and Tamra's night out turns bitter. Housewife Lynne Curtin joins the cast.
Gretchen goes with her husband Jeff to the Indy 500 and gets the VIP treatment as she gets to ride around the track. Vicki's marriage continues its downward spiral when she and Don accompany Tamra and her husband on a romantic trip to Napa.
Gretchen persuades her fiancé, Jeff, to go motorcycle shopping; Lauri visits her daughter Ashley and learns about her start-up skin-care business; Vicki and Donn have a date night, but it turns into a bitter sparring match over their marriage; Tamra\'s husband, Simon, attempts to start a business working out of their house.
The housewives are back for more drama. This week, Tamra proves that her boobs are real. Young housewife Gretchen enters the scene in the Season 4 opener, and her arrival is met with catty remarks from Vicki. Meanwhile, Lauri's new marriage continues to flourish; Tamra treats her mom to a plastic-surgery appointment; and Jeana decides to redecorate.