Wildlife cameraman Gordon Buchanan and animal behaviorists join forces to explore stories of animal lives 'told' by the animals themselves. The series explores the secret side of the animal kingdom where human cameramen can't go, and camera-wearing animals film their own stories. Meerkats, penguins, a chimp, cheetahs, seals, baboons, devil rays, brown bears, and sheepdogs are the subjects of this series.

A major discovery shows how life came back after an asteroid wiped out the dinosaurs. With exclusive access to a fossil trove from the key first million years after impact, the film charts the rise of a new living world from the ashes.

The 11-part BBC series is narrated by Sir David Attenborough and organized so that each 50-minute episode covers a specific geographical region and/or wildlife habitat (mountains, caves, deserts, shallow seas, seasonal forests, etc.) until the entire planet has been represented.