When young doctor Lauren Matheson meets Joe - an older divorced businessman - at a glittering poolside in California, it’s a chance encounter that seems life-changing for them both. Back home in London, their feelings only strengthen. But Lauren soon discovers that building a happy future with Joe is going to be an uphill struggle …

She’s determined to be a good stepmother to his children, four-year-old Toby and complicated teen Grace. But under the watchful eye of Meredith, Joe’s intimidating ex-wife, Lauren can’t seem to do a thing right. Why won’t Joe ever take her side against Grace? And what really happened between him and Meredith?

As her husband retreats into a cold, secretive version of the dashing man she met in California, Lauren starts to wonder if she’s made a costly mistake. Was Joe ever the man she thought she married?