Four married couples are introduced as they embark on an emotionally difficult journey to help repair their relationships. Viewers learn each of their love stories--how they met, how they fell in love, how their marriages took a turn for the worst and why they are willing to risk everything in order to save it. Two relationship experts will help guide the couples through the switch therapy process, as they adjust to living with an experimental spouse. Will their temporary partners be able to fill the void they've been yearning for, or will they discover that the grass isn't always greener? At the end of the experiment, each of the married couples will reunite and make the decision: to either part ways and divorce, or reaffirm their commitment and renew their vows.

The switches have been made and the experimental married couples are getting to know each other while also navigating their new living quarters and sleeping arrangements.

It's the first week of the experiment and the couples are exploring each other's passions, personalities and patience.

While away on a weekend getaway, the experimental married couples are faced with challenging situations that will force them to either open up or shut down emotionally.

Now that the experiment is almost half way through and the couples are invested emotionally, Dr. Jessica pays a visit to all of the experimental married couples in order to check in and give them some surprising news.