While one pair of strangers faces an uncertain future, four other couples celebrate their weddings under the San Diego sun. Cakes are cut, garters are tossed, and the question of wedding night sex is in the air.

Four newlywed couples, who have never met each other before, spend their first night together, sharing stories, secrets, and a bed. In the morning, each is bombarded with personal questions from their spouse's friends and family. Then it's time for sun in the fun as they jet off to a honeymoon in Mexico.

In Puerto Vallarta, the newlyweds enjoy their honeymoon of paddleboarding, horseback riding and whale watching; one husband surprises his wife with the words "I love you," but another spouse makes a much more unpleasant declaration.

As the newlywed strangers enter their third week of marriage, the topic of love is on everyone's minds; deep questions lead to unexpected revelations, and spouses have to face uncompromising attitudes and unforgiven mistakes.

With Decision Day just over a week away, the anxiety increases for everyone; one couple finds out if absence really does make the heart grow fonder, while another struggles with a difficult goodbye.

Things get hot in Mexico as the honeymoons continue for the newlyweds; one groom suddenly drops the L word; another groom can't see past the eight-week mark; another betrays his new wife's trust when he reveals her biggest secret to others.

With one wedding down and four to go, the soon-to-be spouses anxiously prepare to say "I do" to a stranger; however, when one groom gets terrible news, a wedding has to be postponed for the first time in "Married at First Sight" history.

It's time for the couples to take control of their marriages and their futures as they make the decision to stay married or get a divorce. But as they prepare to move forward from the experiment, a shocking realization leads one couple to reverse their decision.

Emotions run deep as the San Diego couples reunite to reveal stunning secrets from their season and surprising updates on their current relationships. As they relive their most romantic, hilarious and dramatic moments, two cast members come to a tense showdown over shocking allegations.

The ten brave San Diego residents have only two weeks to prepare before they meet their spouses at the altar; for one, a family member's disapproval could create an irreparable rift; on the big day, an emotionally-guarded bride becomes a puddle of tears.

The clock nearly runs out, and the couples have only a few days until Decision Day; the last chance arrives to answer any remaining questions, and it ruins the final night for one couple and challenges others.

The San Diego cast struggles to deal with the aftermath of a heated confrontation. Issues from the past continue to put pressure on their relationships as they move forward. The MAFS experts intervene with some blunt words of wisdom to help with wounds that have still not healed.

The wives and husbands embark on a couples retreat, where one wife is treated to her very first prom; while there's laughter, dancing, and the promise of sex for some, there are dramatic outbursts and tears for others.

The couples move into their new apartment together; Pastor Cal visits to help; while one couple takes their relationship to the next level, another must navigate a shocking encounter between their dogs that threatens to tear their marriage apart.

Five newlywed couples settle into their lives in San Diego and prep to be reunited with friends and family for the first time since their weddings; they plan their first housewarming parties together; grievances are aired and advice is shared.

As they celebrate their one-month anniversaries, the couples reflect on their progress and set their sights on the road to Decision Day; while some seek to recapture the magic they've lost, others struggle to foster trust.

Having just passed the one month milestone in their marriages, the husbands and wives open up further to their spouses by returning to their roots and sharing more about their pasts; the couples work to build a stronger future together.

When Dr. Pia returns, trust is put to the test and intimacy soars as one couple shares a steamy getaway and another gets a special delivery; two marriages could be headed for trouble if compromises can't be reached before it's too late.

The couples have one final chance to speak with the experts as Decision Day draws near; Dr. Pepper, Pastor Cal and DeVon Franklin help the couples confront truths; one couple finds it difficult to continue on, while another is ready to go all in.

Five months after Decision Day, the San Diego couples navigate their new reality as they move forward with their relationships and lives. While one couple is on the verge of separation, another struggles to see eye to eye as they contemplate a major decision. After an explosive reunion, tensions are still high among the group as they all reunite one last time to say goodbye to one of their own.