Wildlife cameraman Gordon Buchanan joins a groundbreaking project rescuing orphaned baby grizzly bears with the hope of rearing them and returning them safely to the wild. He arrives at the Bubonitsy Orphan Bear Rescue Centre, Russia in the depths of winter as new bear cubs arrive from all over the country. Gordon must quickly get to grips with being mother bear - from keeping the orphans warm to bottle feeding them day and night. Will the bears manage to build a den to keep them safe for winter? Will the bears survive alone in the wild? And ultimately will the project be a success?