Everybody laughed at Australia for building 1000s of kilometers of fences across the Outback… but 10 years later, the results stunned scientists, farmers, and the global conservation community. From rabbit-proof barriers to high-tech dingo lines and virtual fences that shout at kangaroos, Australia’s wire obsession is reshaping ecosystems, economies, and even forensic science. This documentary uncovers the hidden consequences, surprising benefits, and international impact of the world's longest fences. Watch now to see how a joke became global policy gold.