The world's in trouble. When war comes to the heart of the Italian city where Isabella lives with her family, everything changes.She makes the long journey with her dad to a safer place - the old house where he grew up in the north of England.Isabella must adapt to a completely different life. No shops, no electricity, no phone signal. No friends or neighbours - until she meets two 'wild' children.Rowan and Kelda live by themselves, hidden from the world, survivors of the sickness that swept through the valley.When Dad fails to return from a trip to find food, Isabella has to work out what to do and how to survive.Together, can the children build a new life, a life for the future?What do we really need for a happy life?