The 6-part documentary series follows 15 Tasmanian devils as they are selected from Australian wildlife sanctuaries and then transported and released on remote Maria Island off the coast of Tasmania. Will they rediscover their instincts to hunt, mate and hopefully raise their own? It's a risky experiment. The devils are captive and hand-reared. They've never hunted, found shelter or fought off another predator. If they can fend for themselves, they might save their species. But how will the island's native wildlife cope with their fiesty new neighbours from hell?