Deep in Borneo's forests, Levison meets the last-remaining endangered orangutans, and learns more about their unique lives and their environment, as they face the threat of deforestation and poaching.

Levison Wood heads to Namibia to look for rare desert lions, but it’s not easy as less than 100 are left in the wild. He sees how drought caused by climate change has brought them to the brink of extinction and visits the local people who are losing their livestock to the remaining hungry lions.

In the last episode of the series, Levison Wood braves temperatures down to minus 35C to travel across east Greenland looking for polar bears. He meets the Innuit people and hears how climate change is changing the landscape at a frightening rate, causing huge problems for both people and animals alike.