Episode 1

The Siberian tiger is one of Earth's rarest and most elusive animals, with as few as 300 remaining. It is so rare, more scientists have been to space than have seen one in the wild. In this series, Liz Bonnin, a former tiger biologist herself, travels to the frozen forests of the Russian Far East to help a team of scientists studying these big cats. Their goal is to uncover the hidden world of these mysterious predators, determine why they are declining and what can be done to save them.

When three orphaned cubs are discovered, the team launch a desperate rescue mission. Cameraman Max Hug Williams joins rangers in the race against time to find the cubs as a blizzard approaches - capturing remarkable footage in the process.