Phil and Kelly are an over-extended couple who are busy rearing their three energetic kids. Life is about to get even more hectic with baby number four on the way, and Phil feels their three-bedroom house can barely contain the family as it is. Kelly, however, feels they can better use the existing space in their home. David must find a larger home within their budget that keeps them in their neighborhood, while Hilary needs to find a way to take some of the pressure off the rooms in their existing home.