In the heart of Borneo's rainforests, one of the oldest and most biodiverse ecosystems on Earth, lives the orangutan, arguably the largest tree dweller. The main story is about mother ape Sati and her one-and-a-half-year-old daughter Huyan on their journey through the jungle, while at the Sepilok Orangutan Rehabilitation Centre, orphaned and rescued young animals are given a chance at a new life in the wild. But their habitat is threatened by radical deforestation and palm oil plantations. This impressive documentary shows these endangered great apes at eye level for the first time. With the help of innovative drone technology an insight into the dizzying treetops of the jungle giants was, achieved where they mostly stay. It discovering the secret lives of these extraordinary animals with insightful footage and partly some scenes never before seen. Unforgettable images illustrate why protecting the rainforests is crucial for the orangutans and the future of our planet.