Ada Howard is the wife of the preacher at Nashville's Full Love Baptist Tabernacle. With a whole congregation to help tend to, plus the kids at the daycare where she works, two grown daughters, and two ailing parents, Ada's busy taking care of a lot of people. She hardly has time to take care of herself. And her husband's been so busy lately she's suspicious some other woman may be taking care of him...

Then it comes: the announcement of her 25-year reunion in twelve months' time, signed with a wink by her old flame. Ada gets to thinking about the thrills of young love lost, and the 100 or so pounds she's gained, and she decides it's high time for a Health and Beauty Revival. So she starts laying down some rules. The first rule is: Don't Keep Doing What You've Always Been Doing. And so begins a long journey... Ada's Rules is an action plan to change a body and a life — but it's also about falling back in love with the life you've got.