Leonora is no ordinary orangutan, she is a pioneer. With her three year old son in her arms, she is about to set off on an epic journey back to the wild - the great ape escape. It is a long way from what she is used to. After being orphaned as a baby, she has spent the majority of her life in a rescue centre. She is leaving behind 600 other orangutans, all of whom are relying on her for their chance at freedom. If Leonora can make it, they could too.

• Juliet Stevenson