
Truckers with nerves of steel take their lives in their hands driving heavily loaded vehicles across frozen lakes to deliver supplies to remote locations in Canada and Alaska. Whether they're bringing supplies to Canadian diamond mines, supplying offshore oil rigs in Alaska or even charting new territory driving over frozen swamps and rivers to bring much-needed supplies to small towns, these extreme truckers face troubles from their machines and from Mother Nature.
Hugh and Rick face an obstacle that has the ice road blocked; Dave's has fuel tank trouble; Maya and Tony pick up abandoned loads; Lisa's monster load limps into town after losing two wheels.
Hugh and Rick run into Alex and decide to convoy north together; Alex surprises Hugh with a late Christmas present; Lisa and Tony haul record wide loads; Maya gets into trouble on Koyukuk's steep grades.
Dave is at odds again with his bosses; Maya faces freezing brake line issues; Hugh hauls 30 tons of boulders across Lake Winnipeg; Rick takes the sidelines with truck repairs; Tony and Lisa honor a fallen trucker.
Lisa and Maya help a stranded driver get back on the road; Tony gets a surprise from Carlile; Dave continues his descent into isolation; Hugh and Rick keep up their load count with backhauls; Alex deals with unstable freight.