A brilliantly imagined new 8+ adventure about resilience, family and hope. From the bestselling and Waterstones Children's Book Prize shortlisted author of BOY IN THE TOWER. Perfect for fans of Ross Welford, Lisa Thompson and Onjali Rauf.Rule number one: Always be prepared . . . Billy's mum isn't like other mums. All she wants is to teach him the Rules of Survival how to make fire, build shelter ...