The truckers have delivered the fragile 135-foot derrick to the new MGM exploration site, but before it can be erected, they must also transport the 80-ton substructure that will form its base. At 160,000 pounds, the base must be broken into separate loads, the combined weight of which make them the heaviest--and most dangerous--loads the ice will face all season. Veteran trucker Bear Swenson and Arctic Ice Road rookie Alex Debogorski are entrusted with the challenge. This is the heaviest load of Alex's ice road career. Compounded by on-going and increasing health problems, the pressure on this trucker is rising fast.