Each week two very contradictory families from across the country participate in a two-week-long challenge: The wives exchange husbands, children and lives (but not bedrooms) to discover daily life in another woman's shoes. This astonishing experiment repeatedly changes lives and redefines families.

In the first week of the swap, the wives move in and adopt their new family's lifestyle, no matter how different it may be. They agree to follow a manual written by the departing wife that sets out the rules of their new household - how they parent, shop, do the house work, manage their budgets and their social life. In the second week, everything changes. The new wives take charge. They introduce their own set of rules and get to run the new household their way. It's a radical shock to both families. The results are explosive, enlightening, emotional and often comical.

At the end of the show, the two couples meet for the first time. In a highly-charged exchange of views, both couples make a frank assessment of each other and talk about what they've learned from the experience.