When a group of friends in Mason, Missouri, decide to start a monthly supper club, they get more than they bargained for. The plan for congenial evenings—talking, laughing, and sharing recipes, homemade food, and wine—abruptly changes course one night when one of the women reveals something startlingly intimate. The supper club then becomes Confession Club, and the women gather weekly to share not only dinners but embarrassing misdeeds, deep insecurities, and long-held regrets. They invite Iris Winters and Maddy Harris to join, and their timing couldn't be better. Iris is conflicted about her feelings for a charming but troubled man, and Maddy has come back home from New York to escape a problem too big to handle alone. The club offers exactly the kind of support they need to help them make some difficult decisions.