While waiting for the first snowfall of winter to arrive, Nuptse and Lhotse are excited when they find an unusual snow globe in their home that can change the weather. With the help of Roald, a Polar Explorer Fox, they set off together on an adventure to northern Canada and the Arctic, on a quest to find the great treasure of the north.

As they make their way from the Chilkoot Trail to the North Pole through all the four seasons, the cats will try panning for gold, ride a caribou across the tundra from boreal forest to the Arctic Ocean, and sail among ice floes in the Northwest Passage with the help of an Inuit hunter. With several surprises along the way, the cats learn many fascinating things that make this land and its history unique, from bird migrations and prehistoric animals, to ice blinks and shipwrecks, to permafrost and polar ice caps. Will Nuptse and Lhotse find the great treasure of the north?