In an effort to save their real marriages, four couples say goodbye to their spouses and partake in an experimental marriage with a complete stranger for two weeks.

The experimental couples get to know each other in a new living situation; by the end of the first day, boundaries are tested as the couples rediscover what it's like to build a connection and attempt to navigate their initial attractions.

The experimental couples are assigned activities to help them explore each other's passions and personalities; some couples are forced out of their comfort zones, while others become too comfortable; a surprise announcement raises tensions.

Emotions run high as the couples cope with seeing footage of their real spouses with their experimental partners; the experimental couples are tasked to become more vulnerable with one another, but not everyone is ready to open up.

With the switch almost halfway over, the experimental couples participate in an exercise to help build emotional intimacy, with some continuing to open up and others beginning to shut down; the experts check in and deliver a surprising announcement.

The experimental couples confront their biggest challenge yet, as they come face-to-face with their experimental spouses' real spouse; not everyone likes what they learn, and feelings of jealousy and regret begin to surface for some.

As switch therapy begins to wind down, the experimental couples learn how to rely on a spouse in order to navigate the unexpected; the couples get a new perspective on their time in the switch at intense group summits.

Four married couples try to save their marriages by entering into a social experiment. During this experiment, the four couples switch spouses and live with another participants spouse for two weeks as husband and wife.

Four married couples try to save their marriages by entering into a social experiment. During this experiment, the four couples switch spouses and live with another participants spouse for two weeks as husband and wife.

Four married couples try to save their marriages by entering into a social experiment. During this experiment, the four couples switch spouses and live with another participants spouse for two weeks as husband and wife.