Truckers carry vital equipment and supplies to miners, driving through the thick of winter in their mammoth 18-wheelers.

The rivalry between Hugh and Rick intensifies as they compete for the highest load count. Meanwhile, Jay hauls a 17-tonne water tank to Canada's remote De Beers diamond mine.

An Arctic storm forces a road closure, as Alex attempts to haul a 44,000 pound diamond ore crusher across more than 560km of ice.

An enormous fuel tanker flips over on the ice road and causes disaster. Jay must haul large water purifiers to stop an environmental catastrophe.

Todd White is caught speeding and faces a ban, an overturned tanker threatens to cause an environmental disaster, and TJ Tilcox gets a new vehicle.

Jay Westgard sets out on a trip to the De Beers mine, hauling a mammoth diamond-ore scrubber, and TJ is investigated for negligent driving.