In the fifth book in the series, rainforest expert Ollie and biology expert Leah are on the mission to rescue a lost baby orangutan in the steamy Bornean rainforest. Follow along with the Secret Explorers as they visit an amazing wildlife reserve and make lots of new friends, both human and animal! However, not everyone in the rainforest is as friendly, and the kids soon stumble across a terrible plot to burn an area of the rainforest to expand the palm oil plantation, which will destroy the orangutan habitat and leave these lovable animals without a home. Using their quick wits, with the help of smelly durian fruit and snapping crocodiles - can Ollie and Leah outsmart the adults and save the orangutan's home? Packed with fun illustrations and facts about rainforest animals and plants, this thrilling adventure is perfect for young readers.