Having left for the Yukon to work there as a biologist, Catherine Pinard was introduced to mushing, a sport in which dogs pull a sled. Her apprenticeship gradually led her to discover what it really means to live in the north: hunting and fishing in the freezing cold, being stuck in storms, exploring places as spectacular as they are isolated, etc., first as an apprentice, then as an apprentice. Musher, she participates in races, including the formidable Yukon Quest, one of the most difficult in the world: more than 1600 km through the Canadian Far North and Alaska. Oscillating between moments of ecstasy to walk the trails under the northern lights and the difficult reality of managing a kennel, she will meet legendary characters, inhabited like her by a consuming passion. This story tells the ups and downs of this extraordinary adventurer.