Gordon Buchanan returns to the Democratic Republic of Congo to discover the fate of his gorilla family. When he left, Chimanuka the silverback was being challenged by a rival. At stake were the lives of two of his children, Marhale the orphan and the baby Mwira. Having reconnected with his family, Gordon discovers they face a new threat – poachers in the forest. Can Gordon and the rangers help secure the future of our gorilla family?