When eleven-year-old Addie goes to stay with a foster-care family on a remote Exmoor farm in the midst of a very cold winter, she is full of hurt, anger and a deep mistrust of everyone around her. Until one day, when she rescues a tiny wild foal from the moorland snow and Addie discovers that perhaps she's not so alone after all. And as adventure and unexpected friendship blossom, Addie is determined that both of them will know what is to be home again soon.