More than 7,000 km from his home in the Jura Mountains, Sébastien dos Santos Borges is taking seventeen of his dogs on an extraordinary adventure between Yukon and Alaska, following in the footsteps of the adventurers of the Far North. He is one of the most respected mushers in the world and is preparing to set off on the Iditarod Trail Sled Dog Race, one of the most difficult dog sled races. An expedition into the heart of the wilderness, where the relationship between man and animal is essential to triumph over the cold.