Wildlife filmmaker Rebecca Hosking explores how to make her family's farm in Devon environmentally sustainable for the future, finding answers in nature. Returning to the farm as the next generation to farm the land, Rebecca realizes high fuel prices highlight the UK's reliance on cheap oil for food production. Concerned about the security of this supply, she investigates fossil-fuel-free farming methods. Working with innovative farmers, Rebecca discovers that nature offers the key to a low-energy future for agriculture.