Every woman remembers her firsts: Her first kiss. Her first lover. And her first time contemplating an affair.

Each Friday morning at the Indigo Moon Café, Jennifer, Bridget and Tamara meet to swap stories about marriage, kids, and work. But one day, spurred by recent e-mails from her college ex, Jennifer poses questions they've never faced before. What if they all married the wrong man? What if they're living the wrong life? And what would happen if, just once, they gave in to temptation.

Soon each woman is second-guessing the choices she's made - and the ones she can unmake - as she becomes aware of new opportunities around every corner, from attentive colleagues and sexy neighbors to flirtatious past lovers. And as fantasies blur with real life, Jennifer, Bridget and Tamara begin to realize how little they know about each other, their marriages, and themselves, and how much there is to gain - and lose - when you step outside the rules.