After months of preparation the team embarks on one of the biggest releases they have ever attempted. Using boats, planes and helicopters, they will try to get Mama Pika, her baby and 23 other orangutans deep into the heart of Borneo. At the Centre, we meet irresistible orphans Peanut and Pickle, David the GP rushes to an emergency in Forest School, Lone welcomes the youngest and most vulnerable addition to the Centre, and Angelie (missing from Forest School for over two months) walks straight through the front gate. As the series draws to a close we catch up with some of the orangutans and people who have made time at the Centre such a rich experience, and we reflect on the world of the Centre and the long-term fate of some of our closest animal relatives.