Thirteen year old twins, Joshua and Joanne, think they live in the best place in the world. Their home is nestled on the banks of a river between rainforests, farming land, national parks and a mountainous backdrop. They spend most of their time fishing or riding their bikes and school holidays mean even more freedom to go on adventures in their wonderful surrounds. What Joshua and Joanne don't realize is how quickly things can change. Their world is literally turned upside down and they find out fast what it takes to survive.