Over two extraordinary years, National Geographic Explorer Bertie Gregory discovers secret traditions, surprising intelligence and new societies of gregarious penguins that have never been filmed before. Secrets of the Penguins reveals they

are more like us than we ever dared dream, from courageous risk-takers to the bonds of friendship, and adventurers using ingenuity and innovation to survive in strange new worlds.

The emperors are the largest and strongest penguins, living in the coldest and most extreme environment on Earth. Embedded with an Antarctic colony, National Geographic Explorer Bertie Gregory encounters social skills never filmed before. As the planet rapidly warms, he discovers bonds forged from birth between family, friends and strangers are the difference between life and death.