The pressure on the drivers builds and hot tempers flare as the temperatures plunge to 55 below. Jack gets into it with a southbound driver who raises hell after a near head-on collision with Jack's oversized load on a curve. And Hugh gets an earful from an American driver who wants Hugh off the Alaskan roads and back in Canada. Meanwhile, Alex takes a big risk by picking up a hitchhiker. Ray takes on the steep and treacherous Atigun Pass, where he's already spun out twice this year. The rookie decides to take a gamble... will it be yet another first year mistake? And Lisa has her hands full just trying to get back on the road after getting caught at the scales.

Lisa tackles the most dangerous haul of the season, trucking a multi-million dollar, 100 ton load across the entire state of Alaska. This could be her ticket to the big leagues, or it could be a career killer. Alex races to keep pace in the load count and Greg could be a hero of the road. Ray faces the worst night of his career as he sits trapped in the path of oncoming traffic, but a spin-out at Ice Cut finally sends him over the edge.