The earth is rapidly approaching a sixth mass extinction event, with a quarter of all species under threat. However, there is still hope. Armed with a radical new vision known as ‘rewilding’, follow the world’s top environmental leaders on a spectacular journey across six continents as they work to rebuild ecosystems, restore biodiversity, and even transform lives.

Rare footage of endangered animals and interviews with the world's leading animal welfare specialists and conservation scientists working to protect animals from all seven of Earth's continents, and its mighty oceans, lakes, and rivers.