The Ice Road Truckers are back in action, and the roads are more dangerous than ever. Lisa's first run of the season goes south in a hurry. Two rookie drivers raise the stakes in the 'Dash for the Cash.' And old pros Hugh and Alex, along with wildcard Rick Yemm, leave Alaska behind to take on some of the most remote and deadliest roads on the planet.

Hugh and Rick roll deeper into the Canadian outback, while a dangerous overflow may leave Alex stranded in the wilderness. Dave's training run with Tony reaches the boiling point. Lisa Kelly goes on a rescue mission. And Maya's first look at the Haul Road may be enough to send this rookie back to the big city.

Dave's hot temper may cost him his second, and final shot to become an Ice Road Trucker . Maya fights to prove she belongs behind the wheel. Tony visits the scene of the accident that nearly cost him everything, and Lisa gets a shot to redeem last year's biggest failure. In Canada, the rough roads pound Hugh's rig into submission. And a wrong turn sends Rick on a journey 100 miles down the Winter Roads, driving in reverse!

Hugh and Rick haul the biggest load ever on the Canadian ice roads; Alex fights a massive oil leak; two Dalton newcomers finally head up the highway; Dave Redmon is finally alone in the truck.

While hauling loads north, the Ice Road Truckers hammer away at the weather, accident, and truck obstacles in their way. As Hugh and Rick deliver the largest load ever trucked on Manitoba's ice roads, their convoy comes to a sudden halt after downing a high-voltage power line. Lisa's dream of becoming a heavy haul push trucker depends on her ability to sync up with a new partner. Meanwhile, hoping for an easy run to pump up his load count, Alex pins up to ten tons of trouble. And haul road rookie Dave takes matters into his own hands to make a renegade roadside repair.

The Ice Road Truckers face their greatest challenges to date. Lisa takes on the biggest haul of her career, and a huge promotion may be on the line. Maya is still stuck under Phil's wing and she's beginning to wonder if he'll ever let her make a solo run. Dave gets a second chance to prove he deserves to be trucking on the Dalton, while Hugh, Rick and Alex embark on an epic race over one of the longest and most treacherous roads in all of Canada.

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.

As the season reaches the halfway point, drivers are desperate to pull ahead in the dash for the cash. Hugh, Rick, and Alex, struggled to make deliveries to the remote villages of northern Manitoba, but now, the return trip over 880 miles of Canadian wilderness will push them past the breaking point. In Alaska, the biggest storm of the season descends on the Dalton--forcing every driver to face a brutal whiteout or risk falling behind in the load count. Lisa Kelly deals with the fallout of driving her oversize load into the ditch.

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.

Harsh winter weather has left Lisa stranded in Prudhoe Bay. Dave is in a convoy with Maya and Tony, he tests their patience before leaving them behind. In Canada, Rick's frustration reaches a boiling point and he snaps, while Hugh rescue's Rick's truck, again.

Hugh and Rick face an obstacle that has the ice road blocked, until Hugh decides to clear a path, while Alex gets too close for comfort with a parked car. Dave's trouble with his fuel tank is only the beginning once he gets to dispatch, Maya and Tony pick up abandoned loads, and Lisa's monster load limps into town after losing two wheels.

It's the first warm day of spring and the ice roads are getting dangerously slick. Hugh and Rick hauling tankers with diesel fuel, run into Alex at a fuel stop and decide to convoy north together. When Hugh and Rick see a crashed truck and decide to stop and strap down, Alex blows by and runs solo, much to the ire of Hugh. Later, Alex surprises Hugh with a late Christmas present. Over in Alaska Lisa and Tony haul record wide loads. Maya gets into trouble on Koyukuk's steep grades.

Dave Redmon is at odds - yet again - with his bosses, this time over making a rookie error, and Maya faces freezing brakeline issues as she dashes down the melting ice roads. At the same time, Hugh Rowland hauls 30 tons of boulders across the brittle and thawing surface of Lake Winnipeg as his partner, Rick Yemm takes the sidelines with truck repairs, and Tony Molesky and Lisa Kelly honor a fellow, fallen trucker by spreading his ashes off of the Dalton.

In Alaska, Lisa and Maya help a stranded driver get back on the road. Tony gets a surprise from Carlile while Dave continues his descent into isolation. In Canada, Hugh and Rick keep up their load count with backhauls. Alex has to deal with unstable freight but also scores a backhaul, keeping the race with his rival close.

With the end of the ice road fast approaching, the Ice Road Truckers are sprinting to the finish. But they've got obstacles. A polar bear standoff at Prudhoe Bay tables the plans for oil production and ties up Carlile's loads at the most crucial time of the season. A veteran trucker's calculated risk puts his life and livelihood in jeopardy. One rookie's sent packing as the other picks up the slack. And the Dalton's favorite daughter gets her groove back.

The finish line is in sight and the race heats up. In Canada, Hugh and Rick come across an obstacle that could help Alex take the lead over his old rival Hugh. Rookie Maya is dispatched in a convoy with Lisa for her first trip to the isolated village of Nuiqsut. Tony deals with melting ice on the road while Dave boards an airplane destined for Alabama.