Maggie Day is hurtling towards her fiftieth birthday and, as a divorcee and new grandmother, her life is in free fall. As if that weren't enough, her favourite sister Diana dies and she is left alone to juggle the complex rivalries that bind her and her surviving siblings. Now middle-aged women, all three remain a puzzle to her, as does her sense of being an outsider. Diana's deathbed slip-of-the-tongue raises more unanswered questions and when Maggie's youngest son finally flies the nest, she embarks on a brave trail to distract her from the new loneliness at home. What she finds shakes the family's carefully laid foundations to the core.