On Christmas Eve in 1967, a London woman unhappily transplanted to the Australian suburbs makes a decision that will change forever the lives of her four young children. Forty years on, those children are adept at concealing their shared pain. Deborah has a demanding political career, James is a successful artist, Robert a respected school principal. Only Meredith, the baby of the family, seems stuck. But as their father begins to lose his grip on reality, they find themselves floundering in an unfamiliar sea. And their past is about to reach into the present in ways that will shock and challenge them all.