Single mum Jane has just moved to town. She's got her little boy in tow - plus a secret she's been carrying for five years. On the first day of the school run she meets Madeline, a force to be reckoned with, and Celeste, the kind beautiful woman who is inexplicably ill at ease. They both take Jane under their wing - while careful to keep their own secrets under wraps. But a minor incident involving the children of all three women rapidly escalates: playground whispers become spiteful rumours until no one can tell the truth from the lies. It was always going to end in tears, but how did it end in murder?