The documentary retraces the steps of Bruno Manser, a man from Switzerland who went to live with the indigenous tribe of the Penan in the Jungle of Borneo and ended up helping to defend their rainforest against greedy logging companies. The movie features original film footage, photo and voice recordings by Bruno Manser made in the 1980s, as well as new recordings showing how the life of the Penan has changed in just a few decades.