A man alone on the Yukon Trail, except for his husky dog, is planning on meeting friends on a day in which he encounters severe cold that reaches 75 degrees below zero. His troubles worsen when he falls through the snow and gets his feet and lower legs wet. His only hope of surviving is to build a fire, but his lack of ample supplies, extreme elements and his own diminishing senses prove to be an impenetrable barrier to his existence.