The great dog King struggled free from the snow bank from which he had burrowed close to his sleeping master. The scent of danger was in the air. A moment later, he saw the wolf pack streaking across the ridge. Their howls woke the other dogs, and Sergeant Preston woke with them. The Sergeant pulled himself out of his sleeping bag, and piled more wood onto the fire, but the wolf pack heading down the slope never swerved, they came straight on towards the camp!