Rick and Hugh continue their marathon run, but the Winter Roads wreak havoc on the trucks leaving Hugh stuck on the side of the road. Alex comes to the rescue when a local family finds themselves stranded in the wilderness. Maya gets behind the wheel to take another shot at driving the entire haul road with Dave right behind her. And Lisa and Tony continue their heavy-haul convoy. But with her heavy-haul career on the line, the massive load proves to be more than Lisa can handle.

In Alaska, the storm of the decade pounds the Dalton, sending the truckers' hauls into chaos. After her demotion from heavy haul status, Lisa is determined to deliver her load through the blizzard. But as a whiteout descends, she's blinded and unable to see oncoming vehicles, sending her into danger. Dave attempts to retrieve the pipe load he was forced to abandoned due to extreme weather. But as conditions worsen, will he go without a paycheck yet again? In Canada, Hugh and Rick head into the most remote terrain of Ontario. Without any road signs to guide them, they wind up lost on the edge of the winter road.