This is an adventure story set amongst the ice fields of Northern Canada. The hero is a young boy, Luke, who defies the dangerous elements of nature to reunite an abandoned polar bear cub with his mother. On this trek Luke is aided by Muktuk, a half Inuit and half Canadian, who knows the terrain where polar bears live like the back of his hand. But they are soon separated on the floating ice of the high Arctic, and Luke and the cub are left to protect themselves from bear attacks, giant icebergs, and vicious windstorms.