Alex drives on the Arctic Ocean, to the northernmost Canadian village accessible by ice road. Hugh and Rick face melting ice in a desperate search for missing trailers. In Alaska, a massive oil rig move continues as Jack struggles to mentor impatient young driver, Austin Wheeler. And, it's judgment day for the Dalton rookies as both Darrell and Porkchop meet with the boss to see if they pass their training runs.

Alex gets caught in a whiteout; frost heaves cause trouble for Darrell; Austin is forced to load oversize cargo by himself.

Jack and Darrell rush to make a delivery before their road shuts down; Ray is hampered by a breakdown; Alex takes a risk with an extra large trailer; and Hugh and Rick are forced to put their differences aside.

Austin is tasked with transporting an entire cabin; Jack struggles to navigate a dangerously slick section of road; Lane teams Porkchop with Darrell; Hugh and Rick get into trouble with the law.

Rick gets into an accident; Austin struggles to haul 85 foot sections of pipe; Porkchop helps Jack with his delivery; Darrell fights to stay warm after his truck dies on the road.

The Ice Road Truckers battle across the continent over frozen lakes, rivers, and ocean. Alex heads farther north than ever before on the deadly Dempster. Hugh and Rick face an impossible task on the thin ice of Manitoba's Winter Roads. In Alaska, veteran Jack Jessee returns to lead a pack of hungry new drivers on Carlile's biggest mission in history.

Alex encounters high winds as he hauls a dangerous load of compressed gases; Austin helps a stuck trucker; and Rick puts his cargo in jeopardy while trying to get payback on Hugh.

Austin hauls a huge modular building;,Alex runs into trouble while transporting supplies across a section of frozen ocean; and Hugh and Rick get into a heated argument.

A trailer malfunction threatens to strand Jack Jessee in inclement weather; Darrell struggles through a whiteout; and Hugh and Rick are forced to cross untested ice in order to transport water tanks to a remote community.

Jack scrambles to leave town; Alex braves brutal weather conditions to deliver machinery needed to reopen a critical road; Hugh jeopardizes his friendship with Rick.

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.

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.

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

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.