Australia’s most controversial social experiment is back. The first two couples walk down the aisle, but will one bride’s brother’s stand in the way of her dream?

This episode features two fairy-tale weddings with two very different brides, and Australia’s most nervous groom.

The weddings continue in Australia’s most controversial social experiment. One bride must pass the test of the mother-in-law with the power to break up her wedding.

The first six couples arrive for their honeymoons. For some, love starts to bloom, while others find trouble in paradise.

Last season’s favourite groom John Robertson returns for a second chance at love. And will Troy meet his Barbie dream girl at the altar?

The show’s first millionaire groom puts his faith in the experts, and single mum Gabrielle must find the courage to share her secret with her new husband.

It’s the final wedding of the season and the honeymoons continue. Can Troy win over his sceptical bride? John hits a hurdle on his honeymoon.

The first dinner party of the season and all 11 couples meet each other for the first time but one bride has her eye on another husband.

With love already blooming for some couples, the group is shocked at the first Commitment Ceremony when two brides get blindsided by their husbands.

The fallout from last night’s dramatic Commitment Ceremony continues to be felt as the couples move in together, and the first signs of the scandal that will rock the experiment.

A shock split that no one saw coming, and ‘yes week’ brings some couples closer together, while others struggle following orders from their partners.

A secret pact at the dinner party sets up a betrayal that will split the group.

A shock split that no one saw coming and YES week brings some couples closer together while others struggle following orders from their partners

Grooms homestay. The brides spend the week in the homes of their husbands. Some couples are brought closer together but for others it's a huge reality check.

The grooms' homestays continue with the fallout from the last Commitment Ceremony still causing grief.

The Dinner Party reunites all the couples for the first time since last week's scandal at the Commitment Ceremony and some of the experiment's biggest characters come under attack in a brutally honest get together.

Two couples leave the experiment in another dramatic Commitment Ceremony that also sees love declared.

Brides’ homestays. Grooms spend the week back in the real world at their wives’ homes. Some couples are brought closer together, while others struggle with the reality check.

Brides’ homestays continue. Sarah and Telv have a major breakthrough in their relationship that brings them closer than ever.

The dinner party puts Dean and Tracey back in the spotlight, and Sarah makes a big announcement.

The second last Commitment Ceremony. One groom is shocked by his bride’s decision, while love continues to bloom for Australia’s favourite couples.

Boys’ night. A get-together with the boys leads to a world of hurt for some of the couples.

Dinner Party. The grooms are confronted with details of the Boys' Night and Charlene spares no one with her outrage.

The final commitment ceremony: the remaining couples must decide whether or not they want to renew their wedding vows and pursue a life together outside the experiment.

The couples are split and individuals are teamed up with another partner to discuss their relationship status. Two of the experiment’s biggest personalities face off.

Couples have their final dates before they go home to decide whether or not renew their vows.

At the final dinner party, the remaining couples are tested to their limits with the Honesty Box.

The Vow Renewals Part 1. The remaining brides and grooms declare whether or not they want to continue life as a couple outside the experiment.

The Vow Renewals Part 2. The remaining brides and grooms declare whether or not they want to continue life as a couple outside the experiment.

The Reunion Part 1. All 11 couples reunite for one last dramatic Dinner Party.

The Reunion Part 2. All 11 couples sit and face the experts as they watch video for the first time of the good, the bad and the ugly of their life in the experiment.