As a kid, Nina O'Brien spent all her summers at her grandparents' cabin by the beach at Stepping Stone Bay. Long, sunny days full of fun and laughter with her best friends, Leo, the boy from the boatyard next door, his older brother, Adrian, and local girl Maeve - and, as Nina grew older, the magic of falling in love with Leo. But one summer night changed everything, and those glorious days came to an abrupt end for them all.

Twelve years later, Nina must return to the bay to renovate the old cabin and pass it on to a new owner. But her plan to get the job done and get out isn't quite as simple as she thinks because Leo still lives in the cabin next door and not only that, he works at his family's boathouse right there in the bay. As they begin to work through their differences and what happened all those years ago, will Nina really be able to walk away from him twice?

Maeve has finally returned home to face the past. Her eleven-year-old son, Jonah, loves the sea, has no fear when it comes to the water, unlike Maeve who is terrified of it. But she knows she can't keep Jonah away from the sea or the truth forever because sooner or later her secret will be out...