Four couples at relationship crossroads after seven years of marriage participate in an innovative experiment of switch therapy. Each partner lives with a stranger for two weeks to help determine if different traits and characteristics in a mate could help strengthen his or her marriage. Relationship experts will help guide the couples through the switch therapy process, as the people adjust to living with an experimental spouse. At the end of the experiment, each of the married couples decides to either part ways and divorce, or reaffirm their commitment and renew their vows.