The Housewives arrive in beautiful Cabo San Lucas, Mexico, ready to kick up their heels and have some fun, but while 6 of them are sipping cocktails, Venus is back in Melbourne searching for her passport.

The housewives set sail for some fun in the sun on a catamaran off Cabo’s coast but, beneath the calm waters, a storm is brewing between Gina and Sally. At dinner that night, the girls put their differences aside and open up about past relationships, sharing the lessons they’ve learnt through heartache. But the love swiftly evaporates when Gina and Sally go head-to-head.

Gable vents to Janet and Jackie about her frustrations with Gina. The ladies also debrief on new girl Venus. Later, Janet meets with hotelier and Melbourne socialite Sally Bloomfield who is interested in stocking Janet's tea in her boutique hotel and wellness centre in Bali. The two hit it off and Janet invites her to meet the rest of the ladies and her cocktail party. Gamble causes a stir at Janet's party with her carefully planned gift, which manages to offend Venus and her husband James.

Janet, Jackie and Sally visit Chyka's new country estate and fill her in on all the goss. At Luke's Midsummer Night's Dream 21st party, Janet hears a disturbing rumour about Venus.

The girls celebrate Jackie's 37th birthday in style, with the notable exception of Lydia. Jackie invites them on an overseas trip, motivating Venus to patch things up with Gamble.

Sally invites the girls to celebrate the launch of her accessories line, but things go a little pear shaped when Gamble and Venus lock horns and Lydia stirs things up with Jackie and Janet.

The housewives come together with Alex Perry for the most explosive reunion yet. With bullying and body image on the agenda there are sure to be a few bombshells dropped.

Gina and Lydia are closer than ever. The same can't be said for Gamble who finds herself increasingly on the outs. Jackie questions if Gina has replaced Gamble with new girl Venus?

On a day of truffle hunting in the country, Sally confronts Venus about the photos. Meanwhile Janet, Jackie and Gamble are determined to get to the bottom of the mystery surrounding Venus.

Jackie takes to the stage for her debut Shine It Up show in front of 300 eager fans. Venus holds a make-up masterclass showcasing her new contouring cosmetics, and reveals her true self. In an effort to bid farewell to the ghosts currently haunting her house, Gamble invites the girls to a seance.

Venus plans the ultimate fourth birthday party for her youngest daughter, Sophia. Jackie is the proud recipient of a great honour in her hometown of Newcastle. A nervous Gamble rehearses her surprise song for Rick, and Sally drops by for moral support. Sophia's party enchants even the most hardened housewives, but Gamble's attempt to compliment Venus backfires in her face.

Some forms of exercise are not for everyone and Sally vows never to return after she tries her first spin class with Jackie. Gamble finally reveals her anniversary surprise for Rick and her hard work pays off as it brings him to tears. The tears continue when Sally and her extended family scatter her husband Ian’s ashes. Lydia hosts a dinner for the girls and the night descends into chaos after Lydia attempts to say a few words about each of the girls.