Renowned naturalist Sir David Attenborough narrates this series that was filmed across five years in a single spectacular location, following the lives and fates of four families - leopards, hyenas, wild dogs, and lions - that are inextricably linked as they strive for a foothold in a remote and fertile river valley in Zambia. As well as the intense power struggles between these top predators, the series shows how a colorful supporting cast, from powerful elephant herds to flocks of hamerkops to troops of marauding baboons, impact our central characters in surprising ways.