Rumble on the Tundra

S1, E3: In Churchill, Manitoba, some of the most beautiful and powerful bears on the planet are sharing space with tourists, filmmakers, and townspeople. One aging bear is looking for an easy meal. And one veteran guide reads the tracks in the snow, realizing a polar bear cub is in danger. As the temperature drops and Hudson Bay begins to freeze over, see how these magnificent bears survive their toughest season.