Laura Hamley is the woman who has everything: a loving and successful husband, two beautiful children, an expensive home and a set of equally fortunate friends. But Laura's perfect world is suddenly threatened when she receives an unwelcome phone call from Mrs Partridge, mother of Heddy - the girl Laura and her friends bullied mercilessly at school. Heddy has been hospitalized following a mental breakdown, and Mrs Partridge wants Laura's help to get her released. As Laura reluctantly gets drawn back into the past, she is forced to face the terrible consequences of her cruelty. But, even as her secrets are revealed so too is another even more devastating truth, and the perfect world Laura has so carefully constructed for herself begins to fall apart.