Modern Marvels: During the harsh winter of Canada's Northwest Territory, remote villages and work camps are cut off from the world. To keep them supplied, a tenacious group of long-haul truckers drive their rigs over hundreds of miles on ice roads cut across the surface of frozen lakes. Sometimes the ice cannot support the heavy rig, and driver and cargo plunge through the ice and sink to the bottom. Hitch a risky ride along with the Ice Road Truckers as they drive headlong into bone-chilling danger.