We meet our 4 couples,#1 Diandra and Connor, #2 Maggie and Carson, #3 Dallas and Sincere, #4 Caroline and Sawyer--Each couple is dealing with issues that are tearing their marriage apart, from grief, to judgement, overly competitive natures, dishonesty, to insecurity and doubt. They embark on a social test called The Experiment and are promised a chance at healing their marriages but have no idea what to expect.

Each couple meets their new spouse. Diandra is now with Dallas, Connor with Sincere, Maggie with Sawyer, and Caroline with Carson. Tension all around as each person brings a different level of openess, insecurity and vulnerability to the process. Diandra tries too hard and Dallas is withdrawn. Maggie doesn't beleive Sawyer has anything to offer and is insecure with how phyically perfect he is, Sawyer is young and carefree and sees Maggie as wallowing in her own self doubt. Caroline and Carson open up to each other but both quickly retreat when he compares her to his "real wife". Sincere has guilt about even being there whe she and Connor share a moment.

It's the Final Day of the Experiment with the new spouses. Time for the participants to leave it all on the table before going back to their original spouses. Can Sincere lose herself enough to break her vow to Dallas? Will Dallas be able to keep his integrity if he gives into Diandra? Are Maggie's demons too much for her to be with Sawyer outside of the experiment? How do Carson and Caroline say goodbye after all they've been through?

After having the ultimate experience with their experiment significant, the participants return home to an awkward reunion with their original spouses, and all must decide if they are going to stay together or not.