Austin's heavy haul through snow leads to a rookie mistake; Darrell is sorely tested by an infamous pass; Porkchop is assigned an unexpected load; Hugh enlists a motley crew to drive across ice; and a one-lane mine road pushes Alex to the limit.

In the midst of the early thaw, Darrell and Lisa struggle to make it home over the hardest hit trail on the winter roads system. Art and the King of Obsolete reunite to haul a giant double trailer over over a slick path. Veteran Alex Debogorski races against the clock to deliver to a town in need before the road closes, while fellow Polar driver Todd Burke finds a unique way to conquer a melted ice crossing.

Lisa Kelly becomes stranded hundreds of miles from the nearest town. Darrell Ward takes a risky off-road short cut that's untested by any other truck. Art Burke comes upon a melting ice crossing and a load that's right at the weight limit. 22-year-old Steph Custance learns whether she'll be driving for Polar.

As the season opens, the race begins for VP Express and Polar Industries. This year both companies face a much bigger adversary, the Polar Vortex, bringing with it the worst winter conditions in a century. With the storm only days away, it's a race for loads. Lisa Kelly and Darrell Ward return to lead team Polar to victory, while Art Burke and Todd Dewey both set out to prove to the boss that they can deliver with the best of them. Meanwhile, at VP Express, seasoned pros and former rivals Alex Debogorski and Hugh Rowland join forces and head out into the frozen frontier.

Rick makes an unpleasant discovery about his truck; Alex hauls a dangerously heavy excavator; Lane gets out on the road.

Polar Industries has pulled ahead of rival VP Express, and VP boss Hugh Rowland decides to hit the road on his own. Polar scores a lucrative contract hauling million dollar parts for a water treatment plant, but both Darrell Ward and Alex Debogorski face major delays.

The truckers attempt to deliver their loads as a huge storm approaches. Lisa and Art have to deal with a deadly shutdown. Darrell and Todd don't get along and Alex is searching for divine assistance on thin ice.

Lisa and Todd embark on one of the toughest missions of the season, tackling an untamed trail dubbed the `Highway to Hell'. Darrell Ward steals business out from under his former boss at Polar Industries. A crash could mean the end of Alex's trucking season.

Darrell Ward faces off with a trail named "The Obstacle Course". Todd Dewey struggles to clear a melting ice bridge. Veteran Alex Debogorski is pushed to his limits hauling an oversized fuel tank and Art Burke finds an ice crossing in the middle of the night.

In Alaska, the clock is ticking on the Dalton as the deadline to deliver a massive oil rig pushes every driver to step it up to get the job done. Will the pressure of his first ice crossing cause one rookie to crack? Plus, Alex races to deliver a load to a village across an icy river delta, but a looming storm threatens to trap him just inches above the rushing current. And, Hugh and Rick fight the melting winter roads to deliver their first load of the season to Winnipeg, when a rookie mistake leaves Rick in the line of fire.

A huge wreck affects Darrell's aspirations to be king of the haul road; Porkchop tangles with precarious sheer cliffs on an access road; Austin joins the heavy-haul team; and Alex faces obstacles on the ice.

Alex hauls a high-priced load down a dangerous one-lane road; Austin struggles with heavy cargo; Hugh helps a rookie driver who runs into trouble on the ice.

With loads needed to be hauled for their half million dollar contract, VP bosses Hugh Rowland and Vlad "The Mad Russian" Pleskot agree to keep struggling new hire Art Burke aboard. But they bring in new ice road hopeful Todd Dewey to keep freight moving and put pressure on Art to perform. In a convoy with Hugh and Art, Todd is put to the ultimate test as he faces the first ice crossing of his career. After rival Polar Industries snags a deal to haul loads over a newly opened road, Darrell Ward is sent out to test it, but his truck has a problem that could prove to be deadly. Lisa races to get off the winter roads and back into the load count battle with rival VP Express. While Alex Debogorski retraces his steps over the deadly Shamattawa trail with a giant forklift, knowing a successful delivery will help Polar hold off his old rival Hugh.

The battle gets down and dirty as the roads melt beneath the drivers' wheels. Art Burke fights to keep his rig above ground on a melting ice crossing, while fellow Polar driver Alex Debogorski fights his way up a mud covered mountain. Renegade rivals Lisa Kelly and Darrell Ward struggle on a trail at ground zero of the thaw, where getting stuck could sink their company for good.

The ice is right? After two short seasons, the drivers are ready for what is forecast to be a cold and busy winter. But the tragic passing of legendary driver Darrell Ward leaves the community of drivers wondering who can take his place.

The Alaskan DOT races to stop potentially dangerous overflow from wiping out the Dalton and its truckers. Meanwhile, as the season nears its end, the truckers team up for safety, Hugh gets busted for speeding and Jack and Lisa come across an overturned rig.

Austin spends a night in a ditch; Jack is forced to remove two wheels from his trailer; Porkchop is pulled off the road by Lane; and Hugh and Rick brave melting roads with a heavy load of two cement trucks.

Alex Debogorski races to complete one of Polar's most critical hauls of the season after a dashboard fire nearly costs him more than just a paycheck. Lisa's forced to stop in the middle of a frozen lake when she loses sight of the road. Darrell Ward's patience with Polar reaches its limit after he fails to receive a promised load. At VP Express, Art Burke and Todd Dewey run into trouble when they find their high priced hauls frozen in the snow. And the King of Obsolete's convoy breaks through the ice on one of the most remote trails in Manitoba.

The battle royal with Mother Nature continues as the Ice Road Truckers fight through the storm of the century. Art, Todd, and Lisa press their luck on ice that is buckling under the weight of heavy snow. As conditions deteriorate, Alex is left running on fumes and in desperate need of a lifeline. Darrell goes toe-to-toe with his boss in a fight that'll be a game changer on the winter roads.

A defection in the ranks takes the battle for the winter roads to a whole new level. Hugh hatches a plan for VP Express to crush the competition, hauling the most lucrative load to date across treacherous terrain. The pressure is on Todd and Lisa to up their game and push further out into the frozen frontier.

With Darrell's new company on a roll, he calls in a surprising reinforcement, but can this new team member hack the treacherous ice roads. A brush with near disaster could cut Hugh's season short. And, Lisa and Todd convoy into unchartered territory on a privately built, unmaintained road through the frozen frontier.

Todd must fix his truck or risk being stranded 100 miles form the nearest town. Alex Debogorski has to cross a creek that has thawed in the middle of the road. On an important run for Polar Industries, Art Burke receives some news that could be devastating. Lisa Kelly battles an ice crossing unlike any she has seen before.

After nonstop wild weather it appears the winter roads want revenge. A big bump in the road takes out Art Burke's radiator and causes a coolant crisis, while a tight turn snags Todd Dewey's rig in a deep snow bank. Steph Custance's foray onto a wet ice crossing - becomes a true regret. Meanwhile, Alex Debogorski is moving a construction shack that might be too heavy for the ice - so the veteran trucker uses a steel sled to drag the huge haul across a frozen lake.

The Ice Road Truckers face a blizzard while attempting to move seven million pounds of iron, cross an ocean, and transfer loads on time.

The race to dismantle the Mallik Research site before the ice road melts has the truckers hauling away equipment piece-by-piece.