On a frozen Cornish moor, a fifteen-year-old girl lives in a trailer with her dad and little brother. Ennor's mother left years ago, when things started to go wrong - and gradually their world has fallen apart. Now her father's gravely ill, school has closed, and Ennor knows they're going to take her brother away if things don't pick up soon. So three days before Christmas, when the wind is cold and her dad's health takes a turn for the worse, Ennor packs a blanket, a map, a saucepan and a gun into her rucksack, and sets off to find her mum and bring her home. Ennor thinks she knows where she's going. But this journey will change her life for ever - it becomes a battle for survival, a heartbreaking story of love and friendship, and a fable about not finding what you were looking for, but finding something more important instead . . .