Polar Industries goes for the record books, sending driver Todd on a risky run to deliver the heaviest load in company history. But will the weight prove to be too much on a tenuous ice crossing? Art is sent on a high stakes rescue mission and finds ... (more)the job more than he bargained for. Lisa lands an exclusive contract over one of the wildest trails in Canada. Darrell steals a load from Polar, leading to a clash between him and Mark.