Gordon Buchanan and a team of scientists learn more about various species through the use of animal bodycams. In the Atlantic, they reveal why a large number of devil rays gather near the Azores archipelago every summer. Footage of brown bears in north-east Turkey uncovers a fight between two males and a touching courtship scene, while in southern France, night-vision cameras are used to prove whether guardian dogs are an effective way of protecting sheep from wolf attacks. Last in the series.