Todd, reflecting on the deaths of both Darrell and his cousin Gabe Rygaard (see Ax Men), sets out for Oxford House with a loader on a low trailer.
That night, she finds a stopped truck blocking her path; the driver thinks the hill up ahead is too icy to climb, but she muscles the rig to the peak so both of them can keep moving and finishes her run the next day.
After three warm days that have closed all the roads and left truckers stranded, a nighttime cold snap allows them to start moving loads again.
She loses control on a slick patch and runs into a snowbank; after 13 hours of digging out her tires and trying to move, she manages to break loose and resumes her trip.
As Todd takes roofing shingles from Pickle Lake to Muskrat Dam, the light load causes him to lose traction and slide badly on the new ice.
Art's plan to take a load of building supplies to Pauingassi runs into trouble when his truck's engine unexpectedly quits barely a mile into the trip.
Lisa and Mark call in Darrell's son Reno to help move an oversized pre-fabricated house and additional supplies for it to North Caribou Lake.
Lisa successfully crosses the narrow bridge, and the convoy pushes on in hopes of reaching North Caribou Lake by the end of the night.
When she loses traction on a steep uphill run, Reno has to ease carefully past her so he can hook up tow chains and pull her over the top, but he breaks his bumper in the process.
Upon reaching Pikangikum, he picks up a construction shack bound for Red Lake, Ontario as part of a new Polar contract, but wonders if it is too long or wide for the area's roads.
He pulls it on a steel sleigh in order to distribute its weight more evenly across the melting ice of a lake crossing, then moves it onto a trailer once he reaches the opposite shore.
The strain of pulling the load causes his engine to overheat; he stops to add antifreeze, then cautiously drives the final stretch to finish his run.
A hard bump knocks his truck's mounting bracket loose, punching a hole in his radiator, causing an antifreeze leak that he cannot immediately repair.
The next day, he skids into a ditch, but gets back on the road after shutting off his engine so it can cool down and provide the needed power, then makes his delivery and has his truck repaired.
As rising temperatures send the ice road season into its final days, Lisa and Steph hurry toward Bearskin Lake First Nation with loads of construction supplies and trusses, respectively.
As he traverses a lake crossing covered with slush and open water, his wheels catch on holes and break through the surface layers of ice, but he reaches shore safely and bring his cargo to Pikangikum.
While taking one last load of construction supplies from Pickle Lake to Kasabonika, Todd loses traction on an uphill slope and starts to slide back.
He manages to stop just short of an embankment, then tops the hill with a combination of tire chains and speed and completes the delivery to close out his season.
He is forced to stop on the ice when the emergency brakes engage automatically; after shutting off his engine, he finds a valve that has frozen open and closes it, allowing him to get moving again and make his delivery.
Darrell's son Reno Ward (Season 8) joins the cast in episode 5, helping Lisa repay a debt to Polar owner Mark Kohaykewych.