Notch, the lone male ruler of the Marsh Pride of lions, is looking vulnerable to a violent takeover; Bella the leopard still has her grown-up son Chui in tow, and even though he's bigger than his mom he won't leave home; Toto, the baby cheetah.

Simon King finds out if Notch has survived the takeover bid from the two younger males, while Saba Douglas-Hamilton spots Chui hunting giraffe; Jonathan Scott gets a shock when a troop of angry baboons move in on tiny Toto.

Steve goes to Antarctica to study the amazing wildlife; he visits penguin rookeries, encounters dangerous leopard seals, and shares an iceberg with two inquisitive humpback whales.

In the mid-1980s, hundreds of lions suddenly disappeared from the Namib Desert; now, equally mysteriously, they have returned; how can such a magnificent animal survive in one of the harshest deserts in the world?

Charlie Vandergaw has been living with wild bears in Alaska for more than twenty years. Now, for the first time, Charlie is allowing cameras to capture an entire season at "Bear Haven". Will the authorities make sure this is the last one?