Natural World is a nature documentary television series broadcast annually on BBC Two and regarded by the BBC as its flagship natural history brand. It is currently the longest-running series in its genre on British television, with more than 400 episodes broadcast since its inception in 1983. Natural World is produced by the BBC Natural History Unit in Bristol, but individual programmes can be in-house productions, collaborative productions with other broadcasters or films made and distributed by independent production companies and purchased by the BBC. Natural World programmes are often broadcast as PBS Nature episodes in the USA. Since 2008, most Natural World programmes have been shot and broadcast in high definition.

The four-part series takes an awe-inspiring look at the world around us, shot with ultra-high-definition cameras that capture sweeping panoramas and extraordinary close-ups of Canada’s majestic terrain and diverse species.

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Storm is an extraordinary wolf - the head of a pack in Canada's frozen north that hunts the giant buffalo herds. This pack came to fame in Frozen Planet, and now cameraman Jeff Turner spends a year with Storm and his wolf family, learning how they survive in this harsh wilderness and whether Storm can pass his hunting skills on to the new generation of wolf cubs.

Filmmakers Jeff and Sue Turner profile a Canadian named Charlie Russell, who raises orphaned bear cubs in the Russian wilderness.