Only two weeks are left for the truckers to make big bucks and deliver all their loads to the oil fields Hugh Rowland's impatience with trainee driver Phil Kromm nearly causes a disaster Lisa Kelly braves the Arctic Ocean Ice Road.
Everyone pushes to the limit to get freight to Deadhorse before the season ends in three weeks Lisa rushes to pick up her next load before joining a convoy north with Jack Jesse Hugh and Alex discover a fellow fierce competitor on the road.
A deadly combination of unpredictable weather makes the Atigun Pass more dangerous than ever with slippery conditions and a risk of avalanches Jack Jesse calls on friend Carey Hall to help haul a pair of 46,000-pound tanks worth $300,000.
Tim and George run into a storm 25 miles from Deadhorse Lisa is forced to stop in Coldfoot because of the storm Hugh and his convoy partner have a barbecue in the snow at the top of Atigun Pass.
As the final 72 hours of the season tick away, George Spears calls it a career Lisa Kelly makes a harrowing 300-mile run with no brakes the rivalry between two drivers comes down to the final load polar bears block the road.
The truckers and their rigs are run ragged as they race to haul their last loads Lisa accepts a load of high explosives Jack spins out for the first time during the season Ron's truck springs an oil leak.
The drivers are pushed to their limits when they must shuttle critical supplies to the oil camps of Alaska's North Slope.
Only two weeks are left for the truckers to make big bucks and deliver all their loads to the oil fields Hugh Rowland's impatience with trainee driver Phil Kromm nearly causes a disaster Lisa Kelly braves the Arctic Ocean Ice Road.
Hugh Rowland returns to the winter roads with a grudge and a goal Mark Kohaykewych enlists some of Hugh's biggest rivals.
An aggressive move by Darrell leaves Jack in the dust Austin gets another chance to end his season strong Alex has to cross the ocean with supplies for the village of Tuktoyaktuk Hugh and Rick return to Winnipeg to cash out.
Jack and Darrell make the final run to the village of Nuiqsut Ray tries to prove he still has what it takes after a breakdown Alex gambles with an extra large trailer to haul.
Hugh's trailer brakes go out Todd Dewey gets sent on a solo mission behind Hugh Art must watch the action from the sidelines with his truck in the shop Darrell has truck problems that delay his trip Alex is forced to leave a day late.
Hugh plans for VP Express are on the verge of falling apart Art's season takes another bad turn in the wilds of the winter roads Lisa is put to the test when a dangerous situation threatens her heaviest haul yet.
Hugh and Vlad agree to keep struggling new hire Art Burke aboard Todd Dewey puts pressure on Art to perform Lisa races to get off the winter roads and back into the load count battle Alex Debogorski retraces his steps.
VP Express finally delivers their first loads of the season Art Burke falls behind the bosses on the way back home Darrell Ward fails to conquer a mammoth incline Lisa's broken wrist threatens to shut her down.
Hugh Rowland returns to the winter roads with a grudge and a goal Mark Kohaykewych enlists some of Hugh's biggest rivals.
Jack rushes to get out of town due to extreme temperatures on the oil fields Darrell makes a risky decision on one of the Dalton's steepest inclines.
Rick crashes into a superintendent of the road Austin is given the toughest challenge of his Dalton career Porkchop is sent to help Jack get a job done Darrell Ward fights to stay warm when his truck dies.
Alex faces the biggest blizzard of the season Darrell Ward raises the stakes in his rivalry with Jack Jessee Porkchop struggles to climb Atigun Pass Austin is sent out on a heavy haul special assignment.
Alex Debogorski is trusted with a valuable load the load-count rivalry gets personal Austin battles his first solo heavy haul of the season.