In this "celebration of midlife and all its marvelous messiness," Lisa Darling, a high-flying TV executive and twice-divorced mother of two, is navigating life with an opinionated teenager and a pet-obsessed grade-schooler, organizing PTA events, and supporting her best friend through breast cancer treatment, all while in the throes of perimenopause. It's no wonder her to-do list is on overdrive and she never has time for Pilates or that DIY interior design project she keeps setting aside.

But when LA-based media hotshot Zach Russo swoops in as a temporary stand-in for her best friend's job, Lisa starts feeling overheated and flustered. But that's just the menopause, right? She chooses to believe her hormone replacement therapy needs some adjusting, until she finds herself in a sexy--and seriously ill-advised--cinch with him. As things snowball, Lisa has to confront these long-forgotten feelings and ask herself if she's finally ready to choose herself.